Nimonic 90(ALloy 90,UNS N07090)

Product Item：Nimonic 90(ALloy 90,UNS N07090)

Nimonic ALloy 90 Forged Forging Steel sleeves pipes

Nimonic 90 Forging Forged rings

ALloy 90 Forging steel round bars

UNS N07090 Forged Forging steam gas turbine blade bolts

Description

Jiangsu Liangyi professional manufacturer of Nimonic ALloy 90, Nimonic 90, ALloy 90,UNS N07090 open die forging parts and seamless rolled steel forged rings from china

Following is the shape of Nimonic ALloy 90, Nimonic 90, ALloy 90,UNS N07090,nimonic90 forging steel material that we could do is:Nimonic 90 Forged Steel round bars square bars Flat bars Rectangles Bars Rods,Nimonic ALloy 90 Forged forging steel rings seamless rolled rings,Nimonic 90 Forged Forging Steel Hubs housing shell Sleeves Bushes Bushing Cases Hollow Bars,UNS N07090 Forged Forging Steel Discs Disks Blocks plates,ALloy 90 Forged Forging Steel Pipe Tubes Tubings Piping Shells Casings Case barrels Housings.

Following is forging products of Nimonic ALloy 90, Nimonic 90, ALloy 90,UNS N07090,nimonic90 material that is used in following industry

Nimonic ALloy 90 Forged Forging Gas Compressor Turbine Blades steel Flat Rectangles Bars

Nimonic 90 Forged Forging Gas steam turbine disks, turbine impeller,turbine blisk,turbine discs

ALloy 90 Forging Steel Forging Forged Gas Steam Turbine Doubled-headed Double end Studs Fasteners Bolts bolting

UNS N07090 Forging Steel gas steam Turbine Guide Rings,seal rings Labyrinth Rings Packing Seal Diaphragm & Seal Ring Rotor End Rings contours Casing Rings
ALloy 90 Forged Forging Steel Gas Steam turbine diaphragm diapharagm nozzles
Nimonic 90 forged forging hot working dies,tooling, die blocks,mould, mold.
Nimonic 90 Forged Forging Gas Turbine LPT 1st & 2st 2nd Stg Stage Turbine Case Casings
Nimonic 90 Forged Forging Steel power plant steam turbine control reheat valve disc Disk
ALloy 90 Forged forging Gas Steam Turbine Valve Spindles/Stems/Rods,
ALloy 90 Forging Steel Gas Steam Turbine MSV/GV/CV/CRV Valve Seats, Valve Cores, Valve Sleeves Spools,,Main Steam Valve Covers Bonnets Sleeves

NIMONIC Alloy 90 is a precipitation-hardenable nickel-chromium-cobalt alloy having high stress-rupture strength and creep resistance at temperatures to about 1700°F (920°C). Nimonic 90 also has good resistance to high-temperature corrosion and oxidation. Nimonic 90 is used for blades and discs in gas turbines, hot-working tools, and springs.

Forgings nimonic 90 maeterial shall be manufactured from steel produced by vacuum induction melting 1 electro-slag re-melting {VIM/ESR) or by vacuum induction melting 1 vacuum are re-melting (VIM/VAR) process.
The hot working shall be done in such a way that a uniform fine grained microstructure is achieved.

The NIMONIC 90 forged material shall undergo the following heat treatment:

Solution Treatment - 1080 °C (1975 °F) for 8 hours + air cool or oil/ water quench
Precipitation Heat Treatment (As per BS HR2) - 700 °C (1290 °F) for 16 hours + air cool

The forgings nimonic 90 forged parts shall be free from defects such as cracks, flakes, seams, segregation, non-metallic inclusionsand other defects which may affect the utility of the forgings.

Chemical composition of Nimonic ALloy 90, Nimonic 90, ALloy 90,UNS N07090,nimonic90 forging turbine parts is as
The chemical composition of NIMONIC 90 is as follows:

Nickel (Ni): ≥50%

Chromium (Cr): 18-21%

Molybdenum (Mo): 15-21%

Iron (Fe): ≤1.5%

Titanium (Ti): ≤2%

Copper (Cu): ≤0.2%

Manganese (Mn): ≤1%

Silicon (Si): ≤1%

Carbon (C): 0.13-0.20%

Sulfur (S): ≤0.015%

mechanical property of for Nimonic ALloy 90, Nimonic 90, ALloy 90,UNS N07090,nimonic90 forged round bars is as follow
0.2% Proof strength (N/mm')：Minimum 752MPA

Tensile Strength(N/mm')：Minimum 1175MPA

Elongation(lo= 5d) (96)：Minimum 30%

Reduction In area (%)：Minimum 47%

Impact Energy (J)'：20J

Hardness in HB：305-405

.

FOllowing is one technical requirement of nimonic 90 forged steam turbine blade flat bars is as following:

2 Chemical Composition

Chemical compositionshall conform to the percentages by weight shown in Table 1.

Table 1- Chemical composition (Wt%)

Content

minimum

18.00

15.00

2.00

1.00

maximum

0.13

1.00

0.015

21.00

3.00

2.00

Content

minimum

Remainder

maximum

0.15

0.02

1.50

0.20

5ppm

1 ppm

5 ppm

Remainder

3 Suggested Heat Treatment

Solution heat treatment: heat to 1080 °C ± 10, hold atheat for 8 hours and cool at a rate
equivalent to an air cool or oil quench or water quench.

Precipitation heat treatment: heat to 700 °C ± 10, hold at heat for 16 hours and cool in
air.

4 Metallography

Maximum grain size shall not exceed ASTM No.3, determined in accordance with ASTM
E112.

5 Mechanical Properties

5.1 Tension and Hardness

Table 2- Tensile properties and hardness at ambient temperature in accordance with ASTM E8 (tensile

test) and ASTM E10 (Brinell hardness) methods

Condition

Tensile strength
(min)

Yield strength 0.2% offset
(min)

Elongation A5
(min)

Hardness
(min)*

MPa

(%)

HBW

After precipitation

1080

695

293

* The hardness of the pieces shall be not lower than 293 HB. The difference in the hardness results of the
pieces should not be more than ± 20 HB. The hardness of the pieces must be uniform.

5.2 Creep

Table 3- Creep properties after aging in accordance with ASTM E139 and ASEM E292 methods

Condition

Stress (MPa)

Temperature (°C)

Life (hours)

After precipitation

140

870

30 minimum

6 Nondestructive Analysis

6.1. Visual Examination

The product shall be uniform in quality and condition, sound, and free from cracks and
foreign materials and from imperfections detrimental to usage of the product.

6.2. Fluorescent Penetrant Inspection

Fluorescent liquid penetrant examinationshall be done in accordance with EN ISO 3452-
1. All surfaces to be examined shall be free of Crack like linear indications The
acceptance criteria shall be as specified in DIN EN 1371-2. All relevant linear grade can
be max class-1 and nonlinear grade can be max class-2. Indications exceeding this
severity are unacceptable in according of Table 4 and Table 5.

Table 4- Severity levels for liquid penetrant testing- Linear (LP) and aligned (AP) indications.

Table 5- Severity levels for liquid penetrant testing-Non Linear indication-Isolated (SP) or clustered (CP)

6.3. Radiography Examination
Radiography examination should be done in accordance with SAE AMS 2157 with acceptance criterion Garde A of Table 6.
Table 6- Maximum permissible radiographic severity levels for discontinuities in investment casting 1 inch (25.4 mm)
					wall or less in accordance with ASTM E 192.
Discontinuity		Grade A, inch				Grade B, inch				Grade C, inch				Grade D, inch
		1/8	3/8		3/4	1/8		3/8	3/4	1/8	3/8		3/4	1/8	3/8		3/4
Gas holes		1	1		1	3		3	3	5	5		5	7[1]	7[2]		7
Shrinkage, cavity		None	None		None	None		None	1	None	None		3	1	2		5
Shrinkage, sponge		1	1		1	2 [3]		1	1	4	4		5	6	6		7
Shrinkage, dendritic		1	1		1	2		2	2	4	4		4	6	6		6
Shrinkage, filamentary		None	None		None	None		None	1	None	None		2	None	None		3
Foreign material, less dense		1	1		1	3		3	3	5	6		6	6	7		7
Foreign material, more dense [4]		1	1		1	3		3	3	5	6		6	6	7		7
Cold shut, hot tear, or cold crack		None
Misrun		None
Core shift or mold ridge		Not to exceed drawing tolerance
Mold buckle, positive or negative		Not to exceed drawing tolerance
Excess metal in cracked core		Not to exceed drawing tolerance
Surface irregularities		Not to exceed drawing tolerance
Notes: [1] Excluding the single largest gas hole. [2] Excluding the crack-like discontinuities emitting from the gas holes. [3] Excluding the bottom half of the standard reference radiograph. [4] Use reference radiographic plates for foreign material less dense.
6.4 Ultrasonic Examination
Ultrasonic examination shall be done in accordance with ASTM E2375 which in, discontinuity responses exceeding the class AA of Table 7 are unacceptable.
		Table 7- UT acceptance criteria, discontinuity response, in (mm)
Class	Single Discontinuity Response			Multiple Discontinuities			Linear Discontinuity Length and Response					Loss of Back Reflection Percent				Noise
AA	3/64 in. (1.19 mm) FB			2/64 in. (0.794 mm) FB			½ in. (12.7 mm) long 2/64 in. response (0.794 mm) FB					50				alarm level

We have following inspection equipment to inspect of all our Nimonic ALloy 90, Nimonic 90, ALloy 90,UNS N07090,nimonic90 forging steel gas steam turbine parts

a well equipped chemical lab which carries out test analysis on the steel heats made in the steel mill
a well equipped lab which carries out mechanical tensile & resilience tests as well as creep tests
a metallurgic lab for structural macro-micro and inclusion micro metallurgic examinations, according to ISO 17025
non destructive UT/MP/LP tests carried out by experienced and qualified SNT-TA-1A operators
fixed and portable Brinell/3000/10 hardness check equipment
dedicated and certified equipment for dimensional controls.

All our forged Nimonic ALloy 90, Nimonic 90, ALloy 90,UNS N07090,nimonic90 forged gas turbine parts can be release en10204-3.1 certificate, or en10204-3.2 inspection certificate from following third party,3.2 mit TUV ,GL BV,DNV,ABS ,Lloyds Register of Shipping, RMRS ,RINA and so on

The following details shall be furnished in the test certificate of finished nimonic 90 forged steel:

Heat No. , and melting type.

Dimensional inspection

Details of heat treatment cycle followed.

Results of chemical analysis including tramp elements.

Results of mechanical tests, including hardness test. All individual values shall be reported.Results of ultrasonic tests

Results of surface crack examination

Confirmation of the visual inspection

Confirmation of the verification inspection