Inconel 718(ALloy 718,UNS N07718)

Description

Jiangsu Liangyi professional manufacturer of  Inconel 718,UNS N07718,,Alloy 718,Inconel ALloy 718 open die forging parts and seamless rolled steel forged rings  from china



Following is the shape of Inconel 718,Inconel ALloy 718, Alloy 718,UNS N07718 forging steel material that we could do is:Inconel 718 Forged Steel round bars square bars Flat bars Rectangles Bars Rods,Inconel ALloy 718 Forged forging steel rings seamless rolled rings,Alloy 718 Forged Forging Steel Hubs housing shell Sleeves Bushes Bushing Cases Hollow Bars,UNS N07718  Forged Forging Steel Discs Disks Blocks plates,Inconel 718 Forged Forging Steel Pipe Tubes Tubings Piping Shells Casings Case barrels Housings.


Following is forging products of  Inconel 718,Inconel ALloy 718, Alloy 718,UNS N07718 material that is used in following industry

Alloy 718 forged forging gas separator protector intake HPS splined shaft
Inconel ALloy 718 forging Forged Drilling Pipes Tubes Drill Rods drill Drilling collar
Alloy 718 Forged Forging Turbine and Compressor Labyrinth Shaft Seals
Inconel 718 Forging Copper brass Extrusion Dies, dies case,extrusion stems,
UNS N07718 Forging forged Copper Aluminum Magnesium Extrusion Presses Container Liners Inner Intermediate Liners
Inconel ALloy 718 Forged/Forging Blow Out Blowout Preventer RAM Annular dual Bop Body Bodies Block
Alloy 718 Forged Forging drilling tools,risers,connectors,flexible joint ,seals,flanges gasket
Inconel 718 Forged Forging Valve Balls,valve Bonnets,valve Body Bodies ,valve Stems,valve closures, valve seat rings, valve core, valve discs,for H type two way 2‐way one way back pressure valves, ball valve,check valve,gate valve
ALloy 718 Forged Forging Steel nuclear Power reactor coolant pumps Rotor Impellers
Inconel 718 forged steel  Mechanical Seal Discs
Inconel Alloy 718 Forged Forging Steel Butterfly Valve Main Shafts Spindles
Alloy 718 Forged Forging Swept branches outlets steel fittings swept saddles
Inconel 718 Forged Forging downhole drilling tool Mud Motor Splined Drive shafts,Down hole Electric electrical submersible pumps ESP motor Splined Shaft
Inconel 718 Forged Forging Gas Air Compressor Rotor
Forged Forging  Gas Steam Turbine Engine Tie Rods
Inconel Alloy 718 Forged Forging Steels Christmas Trees wellhead Spool Body Bodies cylinder
Alloy 718 Forged Forging venturi cone meter Body Bodies Blocks
UNS N07718 Forged Forging Steel gate valves Body Bodies bespoke flat bars
Inconel 718 forged steel Flowseal cryogenic High Performance BV Butterfly Valves HPBV shaft
Inconel 718 forging steel Oil measurement valve Spool Ultrasonic flow meter bodies Body
Inconel Alloy 718  Forged Forging Steel double studded adapter flange
Inconel Alloy 718 Forged Forging Steel integral Mud Flange Flanged outlet Studded crosses
UNS N07718 Forged Forging Steel Casing Heads,Tubing Heads,Casing Hangers,Tubing Hangers,Tubing Spools,Casing Spools,Spacer Spools
Inconel Alloy 718 Forged Forgig Steel nuclear reactor coolant pump Casing Shells body bodis blocks,nuclear reactor coolant pumps containment seal chamber Rooms,nuclear reactor coolant pumps containment seal chamber Rooms
Inconel Alloy 718  Forged Forging turbomachinery turbo centrifugal compressor Impeller,Compressor Shrouded Impellers
Inconel Alloy 718  Forged Forging Steel Forged Single Double Bossed boss Blanks FLANGED BOSSES
Inconel Alloy 718 Forged Forging Steel PUMP Casing cover.PUMP BARREL,pump impeller,pump shafts, pump housing, pump shells,pump body,pump wear rings,pump case casing.
Alloy 718 Forged Forging forge Steel transition Cone
UNS N07718 Forged Forging Steel Pressure Vessel Reactor Nozzles
Alloy 718 Forged Forging Gas Compressor Turbine Blades steel Flat Rectangles Bars
Alloy 718  Forged Forging Gas steam turbine disks, turbine impeller,turbine blisk,turbine discs,turbine wheel discs
Inconel Alloy 718  Forging Steel Forging Forged  Gas Steam Turbine Doubled-headed Double end Studs Fasteners Bolts bolting
Inconel Alloy 718 Forging Steel gas steam Turbine Guide Rings,seal rings Labyrinth Rings Packing Seal Diaphragm & Seal Ring  Rotor End Rings  contours Casing Rings
Inconel Alloy 718 Forged Forging Steel Gas Steam turbine diaphragm diapharagm nozzles
Inconel 718 Forged Forging Gas Turbine LPT 1st & 2st 2nd Stg Stage Turbine Case Casings
Inconel 718 Forged Forging Steel power plant steam turbine control reheat valve disc Disk
UNS N07718 Forged forging Gas Steam Turbine Valve Spindles/Stems/Rods,
Inconel 718 Forging Steel Gas Steam Turbine MSV/GV/CV/CRV Valve Seats, Valve Cores, Valve Sleeves Spools,,Main Steam Valve Covers Bonnets Sleeves
Inconel 718 forged forging steel pipes tubes shells piping tubing barrels housing, tube sheets,baffle plates, nozzles, channel flanges for boiler, heat exchanger,pressure vessel,reactors, heaters
UNS N07718 Forged Forging Nickel Alloy Bore Protector




FOllowing is chemical compostion of Inconel ALloy 718 forged steel rings

Element	C	Si	Mn	P	S	Cr	Ni	Mo	Nb	Ti	Al
%min						17.0	50.0	2.80	4.75	0.65	0.20
%max	0.08	0.35	0.35	0.015	0.015	21.0	55.0	3.30	5.50	1.15	0.80
Element	Co	Ta	B	Cu	Pb	Bi	Se	Fe
%min
max	1.00	0.05	0.006	0.30	0.0005	0.00003	0.0003	Rem.

Following of Inconel 718 forging parts heat treatment nechanical property Delivery condition :

Shape	Condition	Temp T°C	Proof strength Rpo₂MPa min	Tensile strength Rm MPa l/tr min  1)	Elongation after fracture A₄%(Lo=4D₀) /tr min  1)	Reduction of are Z% l/tr min 1)	Hardness HB 2)
bar	3)	20	1034	1276/1241	12/6	15/8	min 331 (400-450)
bar	3)	650	862	1000/965	12/6	15/8
forging	3)	20	1034	1276/1241	12/10	15/12	min 331 (400-450)
forging	3)	650	862	1000/965	12/10	15/12

1)l=longitudinal,tr        =transverse.
Direction  of the  longitudinal  axis  of  the  test  piece  in  relation  to  the  principal deformation  direction  of  the   blank.
2)Values given in brackets are not binding.
3)Solution annealed and aged

Stress repcture of inconel 718 steam turbine forged parts as following

Test sample	Shape	Condition	Temp T℃	Stress MPa min	Time to rupture h min	Elongation after fracture A₄%(Lo=4D₀) min
1)	AIl	2)	649±2	689	23	4

1)Both notched and smooth specimens shall be tested.Notched specimenshall not rupture before smooth.
2)Solution annealed and aged
3)The test may be conducted using a higher load.
4)The test may be conducted using incremental loading after 23 h.
Heat treatment way of inconel 718 forged round bars is as following
941-1010±14°C  Holding  time  commensurates  with  thickness.Air  cooling  or  faster. 2-4-2 Ageing
720±8°C/8  h,Cooling  in  the  furnace  to  620±8°C,This  temperature  shall   be  held  to  a total  ageing  time  of  18  h,followed  by  air  cooling.

All documentation of finished inconel 718 forging material inspection document must be written in English.
All results must be given in accordance with the Sl system.
All documentation shall be well readable without risk of incorrect interpretation.
Inspection certificate EN 10204-3.1,with heat analysis and results of all testing in accordance with 6 Delivery inspection.

Heat treatment certificate,with information on the temperature and soaking time. 2-3  Surplus  test  material  shall  be  separated  from  the  blank  and  stored  by  the supplier   for   a    minimum   of   three    month   after    accepted   delivery.If   the    test   material    is to be delivered,this will be stated in the purchase order or in a separate message.

A“Declaration  of  conformity”in  accordance  with  EN  ISO/IEC  17050  may  be accepted as reporting,if this is stated in an agreement with the purchaser.

The    declaration    shall    contain:
All  information  necessary  for  full  tracking  to  delivered  goods  and/or  process  used.
-  Reference  to  all  inspection  and  test  reports.


ALl our inconel 718 forging material  shall file all subordinated documents at  least 15 years after the delivery of the   goods  or  the    service.

Following is inspection standard of Alloy 718 forged parts

ASTM A604    Standard  test  methods for  macroetch testing  of consumable electrode
remelted steel bars and billets
ASTM E112  Standard test methods for determining average grain size
EN ISO 6892-1:20 Metallic  materials  -Tensile  testing  -Part   1:Method  of  test  at  ambient temperature
ISO 204:2009   Metallic materials -Uniaxial creep testing in tension -Method of test
EN 10204   Metallic products -Types of inspection documents
EN ISO/IEC 17050:2004   Conformity  assessment  -Supplier's  declaration  of  conformity  -General requirements

All our inconel 718 forged material must  give  the  material  a  required  purity necessary   for    the    application in following melting methods
one is  triple melted   material,VIM+ESR+VAR., the another one is   double     melted     material,VIM+VAR.

All our UNS N07718 forging material   shall   be   thoroughly   worked,homogenous   and   free   from   blisters, cracks  and  injurious  slag  inclusions.

After   heat   treatment   and   rough   machining of alloy 718 forged parts ,the   surface   of   the   blank   shall   be smooth,and   the   blank   shall   be   free   from   millscale,forging   folds,corrosion   damage or other faults which  may  affect the  usability  of the  blank.

Grain  size requirement of inconel 718 forging bars
The  following   requirements  shall  apply  to  grain  size  determination  unless  otherwise specified  in  the   material  specification:
ASTM  average  grain  size  no.5  or  finer.Occasional   grains  max  no.4.
Macroetching   shall   be   performed   after   rough   machining.Imperfections   shall   not be worse  than  stated  in  following  table:

Class	Condition	Severity
1	Freckles	A
2	White spots	A
3	Radial segregation	Not allowed
4	Ring pattern	C

Inspection  and  testing   shall  be  carried  out  after  final   heat  treatment   (ageing)of  the inconel 718 forged blank.
Heat   treatment  shall  be  carried  out  after working,before  removal    of   the    test specimens,with  well  cleaned  surfaces   of    the    blank.The    specimens  shall be removed  before  ultrasonic  testing  of  the  blank.
Mechanical  testing  shall   be  carried  out  on   integrally  forged  or   rolled  specimens.The position  and  number  of  the  specimens  shall  be  shown  on  the  blank  drawing  or  shall be agreed  in each case.
Tensile  testing   at  20°C  and  650°C.At  least  one  test   piece  from   one  specimen per  part  and  temperature.
Creep  rupture  testing   of  one  test   piece  from   one  specimen  from   each  part  at 650℃.
Hardness  testing  of  each  specimen.
UItrasonic testing  shall  be  carried  out  with  a  method  and  an  extent  to  be  agreed upon. A    special    testing    procedure    specification    shall     be    established    for    each component
Macroetching  shall   be  carried  out  on  each   part.Inspection  shall   check  for  grain size,segregations   and   surface   defects.
Microstructure.If  no  defects  are   revealed   in   macroetching,a   micro   examination shall  be  carried  out  on  areas  marked  on  drawing.

If defects  are  revealed  on  any  area,a  specific  micro  examination  of  the  area  shall  be performed  and  reported.

The  following  test  methods of inconel 718 forged rings shall  be  used  during  delivery  inspection.
Tensile  testing:EN  ISO  6892-1.
Creep  rupture  testing:ISO  204.
UItrasonic   testing    shall   be    carried    out   in    accordance   with    agreed   testing procedure    specification.
Macroetching:ASTM    A604.

Grain  size  estimation:ASTM   E112

MARKING of our finished forged inconel 718 bars
Each  part  shall  be  stamped  with:
The purchaser's part number

The purchaser's purchase number

Following is one testing requirement of inconel 718 forged bars as per API 6A 120KSI

CHEMICAL COMPOSITION LIMITS of inconel 718 forged bars as per API 6A 120KSI

An analysis of each heat of steel shall be made to determine the weight percentages of the elements specified below.  Chemical composition shall be determined on a remelt ingot basis.

TENSILE PROPERTY REQUIREMENTS of inconel 718 forged bars as per API 6A 120KSI
Tensile test specimens shall be removed from a Qualified Test Coupon (QTC) as described in API Spec 6A and tests performed

at room temperature in conformance with the procedures set out in ASTM A370.

A  minimum of one Tensile test may qualify a heat of material, and the components produced from that heat,

if the test results satisfy the requirements specified below.
Minimum Tensile Strength, psi    150,000 (1034 MPa)
Minimum Yield Strength, psi, 0.2% Offset  120,000 (827 MPa)
Minimum Elongation in 2" Gauge Length  20%
Minimum Reduction of area, ≤ 10 in (25.4 cm) cross section 35%
Minimum Reduction of area, > 10 in (25.4 cm) cross section  25%
If the results of the Tensile test(s) do not satisfy the specified requirements, then a retest of two additional test specimens

(removed from the same QTC with no additional heat treatment) may be performed.

The results of these tests shall satisfy the specified requirements.
HARDNESS TEST REQUIREMENTS of inconel 718 forging bars as per API 6A 120KSI
Hardness testing shall be performed in accordance with the procedures in ASTM E10 or ASTM E18.

At least one Rockwell or Brinell hardness test shall be performed on each forging or bar after the final heat treatment cycle.

A minimum of one hardness test shall be performed on the QTC after the final heat treatment cycle.

Test results shall satisfy the requirements specified below.
Hardness Range, HBW   298 – 363 (32 – 40 HRC)

CHARPY V-NOTCH IMPACT REQUIREMENTS (10mm x 10mm)
Impact Testing shall  be performed in conformance with the procedures set out in ASTM A 370 using the Charpy V Notch technique.   A set of three transverse or longitudinal impact specimens shall be removed at mid-radius and tested at or below -75°F (-60°C). Specimens oriented transverse to the primary direction of grain flow shall be used unless the size or geometry of the QTC does not permit transverse orientation (i.e. material less than 3” [76mm] in cross section).   For  material  less  than  3”  (76mm)  in cross section, specimens  may be oriented in the longitudinal direction.   These three impact specimens may qualify a heat of material if the test results satisfy the Minimum Average Value, and no more than one of the three tests falls  below the  required  Minimum Average, and  its value  is  not  less  than the Single Minimum Value.

Transverse

Longitudinal

QTC Cross

Minimum

Single

Lateral

Minimum

Single

Lateral

Section Thickness

Average Value

Minimum Value

Expansion

Average Value

Minimum Value

Expansion

in (cm)

ft-lbf (J)

ft-lbf (J)

in (mm)

ft-lbf (J)

ft-lbf (J)

in (mm)

< 3 (7.6)

–

–

–

50 (68)

45 (61)

0.015 (0.38)

3 (7.6) ≤ 10 (25.4)

35 (47)

30 (41)

0.015 (0.38)

–

–

–

> 10 (25.4)

30 (41)

27 (37)

0.015 (0.38)

–

–

–

If the results of the  Impact test(s) do not satisfy the specified requirements, then a retest of three additional specimens (removed from the same location within the same QTC with no additional heat treatment) may be made, each of which shall exhibit an impact value equal to or exceeding the Minimum Average Value.

MATERIAL QUALIFICATION of inconel 718 forged bars as per API 6A 120KSI
The properties exhibited by the Qualification Test Coupons (QTC) shall represent the properties of the material comprising the production parts it qualifies.  A single QTC may be used to represent the Impact and/or Tensile properties of the parts produced form the same heat, provided it satisfies the requirements of API Spec 6A.
ALLOWABLE MELTING PRACTICE(S) of inconel 718 forged bars as per API 6A 120KSI
Material supplied to meet this specification shall be melted by one of the following sequence of processes:
Step 1:  Basic electric furnace (EF)
a)  Step 2:  Argon oxygen decarburization (AOD) or vacuum oxygen decarburization (VOD)
b)  Step 3:  Vacuum arc remelting (VAR)
c)  Step 4:  Additional VAR
Step 1:  Vacuum induction melting (VIM)
a)  Step 2:  Vacuum arc remelting (VAR)
8.4.       Step 1:  Vacuum induction melting (VIM)
a)  Step 2:  Eletroslag remelting (ESR)
FORMING PRACTICE(S) of inconel 718 forged bars as per API 6A 120KSI
All materials shall be formed using a hot working practice(s) which  produces a wrought structure throughout.   The  minimum  total  hot  work  reduction  ratio  shall  be  3.75:1.    When  not  proprietary, vendor shall document hot working practices.
REQUIRED HEAT TREATMENT of inconel 718 forged bars as per API 6A 120KSI
All  heat  treating  of  parts  and  QTCs  shall  be  performed  with  production  type  equipment
meeting the requirements specified by the manufacturer.
The  material  temperature shall  be  measured  by  use  of either a furnace thermocouple, a
contact surface thermocouple or a heat sink as specified in API Spec 6A.  The hold time shall not commence until the contact surface thermocouple or a heat sink reaches at least the minimum required temperature.
Material supplied to meet this specification shall be solution annealed and age  hardened in accordance with the following procedure:

Heat Treat Process				Holding Temperature				Holding Time		Media
Solution Anneal				1870°F – 1925°F (1021°C – 1052°C)				1 to 2-1/2 hrs		Air cool or faster(1)
Age Harden				1425°F – 1475°F (774°C – 802°C)				6 to 8 hrs		Air cool or faster(1)

Notes:  (1) For Water or Polymer Quenching, the temperature of the water or water based quenching medium shall not exceed 100°F (38°C) at the start of the quench, nor exceed 120°F (49°C) at the completion of the quench.  Starting and ending quench media temperatures shall be documented.

Following is heat treatment chart of inconel 718 forged bars as per API 6A 120KSI

MICROSTRUCTURAL REQUIREMENTS of inconel 718 forged bars as per API 6A 120KSI Sample(s)  of  material  from  each  remelt  ingot  per  heat  treat  lot  shall  be  subjected  to  a microstructural analysis.
Longitudinal microstructural samples shall be etched for examination with an etchant suitable to reveal detrimental phases.  The samples shall be examined at 100X and 500X using light microscopy.
The  microstructure  shall  be  free  of  continuous  grain  boundary  secondary  phases.    The microstructure shall be free of acicular delta phase in and growing from grain boundaries.  No topological duplex grain size as defined and measured per ASTM E 1181 is allowed.

The average grain size shall be predominantly No.3 or finer for ≤10 in (25.4 cm) cross section and  No.2  or  finer  for  >10  in  (25.4  cm)  cross  section.    The  average  grain  size  shall  be determined in accordance with ASTM E 112 and reported.
NON-DESTRUCTIVE EXAMINATION (NDE) REQUIREMENTS of inconel 718 forged bars as per API 6A 120KSI
Material supplied to this specification shall be capable of passing Ultrasonic Testing per API Spec 6A, PSL-3.
DEVIATIONS AND WAIVERS of inconel 718 forged bars as per API 6A 120KSI
If the material supplier wishes to apply for a waiver to any of the requirements in this document then they shall submit a written request prior to the delivery of the material.   Signed documents approving any accepted deviations shall be submitted with the delivery of material and MTRs.
MATERIAL TEST REPORTS (MTRs) of inconel 718 forged bars as per API 6A 120KSI
The material supplier shall provide a certified test report containing the following information as a minimum:
Tensile Test results
Hardness Test results
Chemical Analysis results
Impact Test temperature, orientation and results
Melt Practice used, including melt source
Total hot work reduction ratio (may be reported as a minimum value)
Actual heat treatment times and temperatures
Quench media used, including quench media starting and ending temperatures
Statement(s) that the material complies with the microstructural analysis requirements
The absence of any response or documentation required shall represent a rejectable non- conformance to this specification.

SPECIAL REQUIREMENTS of inconel 718 forged bars as per API 6A 120KSI : API SPEC 6A PSL-4 Material supplied to API Spec 6A PSL-4 shall have the following additional requirements:
Heat Treatment Temperature for inconel 718 forged bars as per API 6A 120KSI PSL-4 material shall be determined by using a heat sink, as specified in API Spec 6A.   The  heat sink used shall be documented and the temperature reported by the manufacturer.
inconel 718 forged bars as per API 6A 120KSI Material  supplied  to  this  specification  for  PSL-4  shall  be  capable  of  passing  Ultrasonic Testing per API Spec 6A, PSL-4.