Description
Jiangsu Liangyi professional manufacturer of 25CrMo4,25 CrMo 4,1.7218 open die forging parts and seamless rolled steel forged rings from china
Following is the shape of 25CrMo4,25 CrMo 4,1.7218 forging steel material that we could do is:25CrMo4 Forged Steel round bars square bars Flat bars Rectangles Bars Rods,1.7218 Forged forging steel rings seamless rolled rings,25CrMo4 Forged Forging Steel Hubs housing shell Sleeves Bushes Bushing Cases Hollow Bars,25CrMo4 Forged Forging Steel Discs Disks Blocks plates,AISI 415 Forged Forging Steel Pipe Tubes Tubings Piping Shells Casings Case barrels Housings.
Following is forging products of 25CrMo4,25 CrMo 4,1.7218 material that is used in following industry
25CrMo4 Forging gearbox,gear reducer gear wheels, pinion shafts,ring gears,Gear shafts.
25CrMo4 forged mud pump, frac pump pinion shafts, bull gears,gear shafts, gear wheels
25CrMo4 Forged Forged Pumps suction side sealing jacket seal chambers jacket casings
1.7218 Forged Forging Swivel Ring Flanges
25crmo4 Forging/Forged Forge Steel Wye Piece/Piggable Wyes
25 CrMo 4 Forged Forging Swept branches outlets steel fittings swept saddles
1.7218 Forged Forging Steel double studded adapter flange
25CrMo4 Forged Forging Steel Nuclear Power trunnions=
25CrMo4 forged forging steel pipes tubes shells piping tubing barrels housing, tube sheets, nozzles, channel flanges for boiler, heat exchanger,pressure vessel,reactors, heaters
25crmo4 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 pump
25CrMo4 Forged Forging Steel nuclear Power reactor coolant pumps Rotor Impellers
25CrMo4 forged steel Mechanical Seal Discs
1.7218 Forged Forging Marine Ship Boat Propeller Shafts
1.7218 Forged Forging downhole drilling tool Mud Motor Splined Drive shafts,Down hole Electric electrical submersible pumps ESP motor Splined Shaft
25crmo4 Forged Forging Gas Air Compressor Rotor
1.7218 Forged Forging Steels Christmas Trees wellhead Spool Body Bodies cylinder
25CrMo4 Forged Forging Block Adaptor
25CrMo4 Forged Forging venturi cone meter Body Bodies Blocks
25CrMo4 Forged Forging Steel frac pumps Fluid End Body Bodies Blocks Modules
25 CrMo 4 Forged Forging Steel gate valves Body Bodies bespoke flat bars
25CrMo4 Forged Forging Steel drill head casings,collars,landing bowls
25CrMo4 forging forged steel Couplings
25CrMo4 forged steel Flowseal cryogenic High Performance BV Butterfly Valves HPBV shaft
1.7218 forging steel Oil measurement valve Spool Ultrasonic flow meter bodies Body
25crmo4 Forged Forging Steel Subsea X Tree high pressure elbow
1.7218 forged forging Steel wellhead locknut Venturi Bench
25CrMo4 Forged Forging Steel double studded adapter flange
25CrMo4 Forged Forging Steel integral Mud Flange Flanged outlet Studded crosses
25CrMo4 forged steel Downhole drilling tool Mud Motor End Caps
1.7218 Forged Forging Steel Casing Heads,Tubing Heads,Casing Hangers,Tubing Hangers,Tubing Spools,Casing Spools,Spacer Spools
25CrMo4 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
25CrMo4 Forged Forging Steel Pressure Vessel STUDDING OUTLET
25crmo4 Forged Forging turbomachinery turbo centrifugal compressor Impeller,Compressor Shrouded Impellers
25 CrMo 4 forging Forging/Forged Steel Wellhead Christmas Tree Frac Head (Fracturing Head)
25CrMo4 Forged Forging Steel Forged Single Double Bossed boss Blanks FLANGED BOSSES
25CrMo4 Forged Forging Steel PUMP Casing cover.PUMP BARREL,pump impeller,pump shafts, pump housing, pump shells,pump body,pump wear rings
25CrMo4 Forged Forging forge Steel transition Cone
1.7218 Forged Forging Blowout Preventer RAM Annular dual Bops Body Bodies Block
25CrMo4 forged forging steel Load Cell
25CrMo4 forging steel Homogeniser Homogenising Pumping pistons Plunger
25CrMo4 Forging (forged) Bowl Body/Bodies for Centrifugal Machines and Decanters, Decanter Centrifuge
The material 1.7218 is a chrome-molybdenum alloyed tempering steel with good welding properties. Due to its chemical composition, it is suitable for tempering and due to the very good toughness has good tensile strengths, which is why it is used primarily for components in which these characteristics are very important.
Following is production and inspection standard of 25CrMo4 Forged parts
ISO 643 Steels Micrographic determination of the apparent ferritic or austenic grain size in steels.
ISO 4967 Steels - Determination of the content of non-metallic inclusions -- Micrographic method using standard diagrams.
EN 10083-1 Steels for quenching and tempering Part 1- Special technical delivery conditions.
EN 10083-2 Steels for quenching and tempering Part 2- technical delivery conditions for non alloy steels.
EN 10083-3 Steels for quenching and tempering Part 3- technical delivery conditions for alloy steels.
EN 10250-1 Open die steel forgings for general engineering Part 1- General requirements
EN 10250-2 Open die steel forgings for general engineering Part 2 – Non-alloy quality and special steels
EN 10250-3 Open die steel forgings for general engineering Part 3 – Alloy special steels
EN 10084 Case hardening steels. Technical delivery conditions.
NF A 45-001 General purpose merchant iron and bars Rolling tolerances
EN 10204 Metallic products Types of inspection documents
EN 10308 Non Destructive Testing Ultrasonic inspection of steel bars
EN 10228-3 Non-destructive testing of steel forgings Part 3- Ultrasonic testing of ferritic or martensitic steel forgings.
The chemical composition of 25CrMo4 forged material shall be as shown in the table below. Measurement of the chemical compositionshall be in accordance with ASTM A751.
C% 0,22-0,29
Si% 0,10-0,40
Mn% 0,60-0,90
P% max 0,025
S% max 0,035
Cr% 0,90-1,20
Mo% 0,15-0,30
Cu% max 0,30 0,40
The cleanliness according to ISO 4967 must be homogeneous throughout the part:
The residual element content is limited:
Aluminium: between 0.020 and 0.050%
Titanium : <= 0.010% (titanium deoxidization is prohibited)
Boron : <= 0.0010%
H2 : <= 2 ppm
Ca : < 15 ppm
O2 : < 25 ppm
The delivery condition of finished 25Crmo4 forged material is given on the table hereafter with the following conditions:
. Stripes Structure forbidden
. overheated structure prohibited
. Grain size index : 5 min (according ISO 643)
. Macro-stress relieving
No defect is allowed that is likely to adversely affect the mechanical characteristics of the part (contraction cavities, forging folds).
25CrMo4 1.7218 forged bars mechanical properties for quenched and tempered condition ISO 683-2: 2018 Testing at room temperature (longitudinal)
size in 16/8 tensile strength 900-1100 yield strength 700 elongation 12 reduction 50 hardness 271-331
size in 40/20 tensile strength 800-950 yield strength 600 elongation 14 reduction 55 hardness 240-286
size in 100/60 tensile strength 700-850 yield strength 450 elongation 15 reduction 60 hardness 213-253
size in 160/100 tensile strength 650-800 yield strength 400 elongation 16 reduction 60 hardness 200-240
The following inspections must be carried out by the steel maker for each 25crmo forged parts
Case carburized steels in normalized (+FP) or treated (+TH) condition
chemical analysis
residual elements
JOMINY end-quench test
cleanliness
delivery condition hardness
25CrMo4 forgeed material in annealed (+N) or Quenched and tempered condition (+QT):
chemical analysis
residual elements
tensile test (strength and elongation)
resilience test (on three test specimens)
Cleanliness
delivery condition hardness
For(+FP) or (+TH) conditions of 25Crmo4 forged bars, the mechanical characteristics may be required for an order. The tests are performed on a sample taken in a bar from the same casting and having the same hot working rate according to the provisions laid down in standard EN10084.
Ultrasonic testing of 1.7218 forged b ars
On each bar or cut section, ultrasonic testing is performed according to standard
EN 10308 for bars to a diameter up to 300 mm
EN10228-3 for bars with a diameter over 300 mm
Definition of the families of parts:
- solid cut sections or bars: 1a
- drilled cut sections or bars: 3a (10228 -3)
Acceptance class of 25Crmo4 forged bars
in the area between outside diameter D and D/2: class 3 with R < 4/5 (class D/c according to SEP 1921)
in the other cut sections of the part: class 2 (class Cc according to SEP 1921) with R>= ¾ class 2 (class Cc according to SEP 1921) with R>= ¾
Unless otherwise specified, the method retained will be the equivalent diameter method.
Unless otherwise specified, the sampling plan will be exploratory sampling according to 3 generators with 120° at least.
The operator must have COFREND or equivalent level 2 certification at least, unless otherwise specified when ordering.
Inspection documents of finished 25crmo4 forged bars
The supplier sends an acceptance certificate as per 3.1 of standard EN 10204 with the parts and for each order.
This certificate, identified with a casting number, includes the results for all of the inspections required in clients technical manual
Compliance with the requirements of this specification is mentioned on the certificate.
Welcome your inquiry of 25CrMo4,25 CrMo 4,1.7218 forged parts
