Material 1.4057

Stainless steel

The grade 1.4057 is a martensitic stainless steel.
1.4057 is mainly supplied in the quenched and tempered condition.
In the quenched and tempered condition, the tensile strength at room temperature is between 800 and 950 N/mm², the yield strength is at least 600 N/mm².
The nickel content gives the material X17CrNi16-2 its toughness.
We stock 1.4057 in round and flat dimensions. If you need tubes or forgings, this is also no problem.
For your important projects you will get European top quality products from us.

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Standards

HDIN / EN	US-Standard	AFNOR	UNI	JIS	request
X17CrNi16-2 X20CrNi17-2	AISI 431		X16CrNi16	SUS431 SUS431FB	request

Material Category: Stainless steel

Applications

Mechanical engineering
Pumps
Piston rods
Turbine blades
Fittings

Heat Treatment

Soft annealing 680 - 800 C° oven,air
Hardening 950 - 1050 C° Polymer, oil or air
Tempering QT800 750 - 800 C° + 650 - 700 C° (2nd tempering) water or air
Tempering QT900 600 - 650 C° Water or air

Weldability

1.4057 is difficult to weld

Chemical Composition

C %	Si %	Mn %	P %	S %	Cr %	Ni %
0,12 - 0,22	max 1,00	max 1,50	max 0,040	max 0,015 ^{1) 2)}	15,00 - 17,00	1,50 - 2,50

Product Specifications

DIN EN 10088-3
DIN EN 10272
DIN EN 10250-4
DIN EN 10222-2

Mechanical Properties

geglüht	Zugfestigkeit (Rm)	Härte [HB 30]	Probenlage
	<= 950 N/mm²	<= 295 HB 30	längs

gehärtet	Zugfestigkeit (Rm)	Härte [HB 30]	Härte [HRC]
	~ 1.570 MPa	~ 450 HB 30	~ 47 HRC

vergütet	0,2% Dehngrenze (Rp0,2)	Zugfestigkeit (Rm)	Bruchdehnung (A5, 65)	Einschnürung (Z)	Kerbschlagarbeit KV (ISO-V/Charpy-V)	Probenlage
<= 60 mm			>= 14 %		>= 25 Joule	längs
60 - 160 mm			>= 12 %		>= 25 Joule	längs
<= 160 mm	>= 600 N/mm²	800 - 950 N/mm²		>= 45 %		längs
	>= 515 N/mm²				~ 100 ° C
	>= 565 N/mm²				~ 100 ° C
	>= 495 N/mm²				~ 150 ° C
	>= 525 N/mm²				~ 150 ° C
	>= 475 N/mm²				~ 200 ° C
	>= 505 N/mm²				~ 200 ° C
	>= 460 N/mm²				~ 250 ° C
	>= 490 N/mm²				~ 250 ° C
	>= 440 N/mm²				~ 300 ° C
	>= 470 N/mm²				~ 300 ° C
	>= 405 N/mm²				~ 350 ° C
	>= 430 N/mm²				~ 350 ° C
	>= 355 N/mm²				~ 400 ° C
	>= 375 N/mm²				~ 400 ° C

angealssen bei 600 - 800 ° C	Zugfestigkeit (Rm)
	800 - 1050 N/mm ²

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