1.4935, X20crmowv12-1, AISI 422 – Creep Resisting Steel Pipe

• Type: Stainless Steel Bars
• Standard: ASTM, AISI, GB, JIS, DIN, EN
• Grade: 400 Series
• Certification: ISO, RoHS, IBR, AISI, ASTM, GB, EN, DIN, JIS
• Shape: Square
• Technique: Cold Rolled
• Model NO.: CREEP RESISTING
• Surface Treatment: Bright
• Transport Package: Full
• Specification: Customized
• Trademark: Shanshui
• Origin: Liaocheng
• HS Code: 7201500010
• Production Capacity: 5000 Tons/Year

Product Description

Material 1.4935 High-temperature resisting steel and alloy. The material 1.4935 is a highly heat-resistant martensitic steel. This steel can be used up to a maximum temperature of about 650 °C / 1202 °F. Typical application for the turbine is 1.4935.

 

Standards

HDIN / EN	US-Standard
X20CrMoWV12-1	AISI 422 UNS S42200

Chemical Composition

Standard	C:	Si:	Mn:	P:	S:	Cr:	Mo:	Ni:	V:	W:	Cu:
EN	1.4935, X20CrMoWV12-1
	0.17-0.24	0.1-0.5	0.3-0.8	<0.025	<0.015	11.0-12.5	0.8-1.2	0.3-0.8	0.25-0.35	0.4-0.6	-
JIS	SUH616
	0.20-0.25	<0.5	0.5-1.0	<0.04	<0.03	11.0-13.0	0.75-1.25	0.5-1.0	0.2-0.3	0.75-1.25	<0.3
ASTM	AISI 422 / AISI 616 - S42200
	0.20-0.25	<0.75	<1.0	<0.04	<0.03	11.0-12.5	0.75-1.25	0.5-1.0	0.15-0.30	0.75-1.25	<0.5

 

 

APPLICATIONS

Jet engine components

High temperature fasteners, springs

Non-magnetic cryogenic equipment

 

1.4935, X20CRMOWV12-1, AISI 422 - CREEP RESISTING STEEL, DATA ACCORDING TO EN 10088-3:2014 AND EN 10302

 

1.4935, X20CrMoWV12-1 - description

Creep resistant steel used for thermal engine components in power plants, mainly turbine blades, but fasteners as well. Hardenable. Max temperature for continous operating is 580 °C.

Chrome-nickel steel with an austenitic structure with carbides. Alloying additions of molybdenum, vanadium and tungsten increase the melting temperature, thus having a positive effect on creep resistance.

The steel is hard to weld. It is assigned to welding group 7.2 according to ISO/TR 20172.

 

Physical and mechanical properties

1.4935 - physical properties and indicative mechanical properties:

Density: 7.7 g/cm3

Linear expansion coefficient: 10.5-12.5 *10-6m/(m*K)

Thermal conductivity: 24 W/(m*K)

Specific heat capacity: 460 J/(kg*K)

Young's modulus: 216 GPa

Electrical resistivity: 0.6 µΩ*m

Tensile strength Rm: > 600 MPa

Creep limit for max elongation 0.2% Rp0.2: > 800 MPa

Creep-rupture strength Ru: > 275 MPa; 500 °C; 100000 h

Creep limit for max elongation 0.2% Rp0.2 - high temperature test:

Testing temperature: 400 °C - > 420 MPa

Testing temperature: 500 °C - > 335 MPa

 

Mechanical properties of +QT700 class forgings:

Ambient temperature:

Re: > 500 MPa

Rm: 700-850 MPa

A: 15 %

 

Yield strength Re in high temperature:

Testing temperature: 50 °C - > 465 MPa

Testing temperature: 100 °C - > 460 MPa

Testing temperature: 150 °C - > 445 MPa

Testing temperature: 200 °C - > 430 MPa

Testing temperature: 250 °C - > 415 MPa

Testing temperature: 300 °C - > 390 MPa

Testing temperature: 350 °C - > 380 MPa

Testing temperature: 400 °C - > 360 MPa

Testing temperature: 450 °C - > 330 MPa

Testing temperature: 500 °C - > 290 MPa

Testing temperature: 550 °C - > 250 MPa

 

Mechanical properties of +QT800 class forgings:

Ambient temperature:

Re: > 600 MPa

Rm: 800-950 MPa

A: 14 %

 

Yield strength Re in high temperature:

Testing temperature: 50 °C - > 585 MPa

Testing temperature: 100 °C - > 560 MPa

Testing temperature: 150 °C - > 545 MPa

Testing temperature: 200 °C - > 530 MPa

Testing temperature: 250 °C - > 505 MPa

Testing temperature: 300 °C - > 480 MPa

Testing temperature: 350 °C - > 450 MPa

Testing temperature: 400 °C - > 420 MPa

Testing temperature: 450 °C - > 380 MPa

Testing temperature: 500 °C - > 335 MPa

Testing temperature: 550 °C - > 280 MPa

 

Heat treatment and working

Recommended working and heat treatment parameters for 1.4935 alloy:

Quenching: 1020-1070 °C

Tempering: 680-780 °C

 

Replacements, equivalents and other designations:

1.4935, X22CRMOWV12-1, SUH616, 20VNIWMOCR120, AISI 422, AISI 616, S42200, EW 4935, T502, 56B.I.; DE 4935, HWMOV3, GRADE 616

 

Machining Status

raw
Rough Turning
Finished
Processed according to technical drawing