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Home > Standard > 1.4875, DIN X55CrMnNiN20-8, SAE EV12 standard

1.4875, DIN X55CrMnNiN20-8, SAE EV12

1.4875, DIN X55CrMnNiN20-8, SAE EV12 standard Download, We provide the main countries around the ISO standard download, including: AISI(US),UNS(US),SAE(US),ASTM(US),AMS(US),ASME(US),MIL(US),FED(US),DIN(DEU),JIS(JPN),AFNOR(FR),B.S.(UK),SS(SWE),UNI(ITA).

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Round bar standard Download
Square-shape steel standard Download
Plate steel standard Download
Billet standard Download
Flat bar standard Download
wire standard Download
tube standard Download
pipe standard Download
Forging standard Download
casting standard Download
sheet standard Download
round bar standard Download
coil standard Download
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1.4875, DIN X55CrMnNiN20-8, SAE EV12

Designation by Standards

 

Brand Name LH No. Mat. No. DIN EN AISI
212N 952 1.4875 X55CrMnNiN20-8 - SAE EV12



Chemical Composition (in weight %)

C Si Mn Cr Mo Ni V W Others
0.55 max. 0.25 8.50 20.35 max. 0.50 2.13 - - -



Description
A nitrogen-strengthened, austenitic valve steel.

Applications
Has been used extensively for automotive valve applications.

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 215
Density [g/cm3]: 7.7
Thermal conductivity [W/m.K]: 14.5
Electric resistivity [Ohm mm2/m]: 0.79
Specific heat capacity[J/g.K]: 0.50

Coefficient of Linear Thermal Expansion 10-6 oC-1

20-100oC 20-300oC 20-500oC 20-700oC
14.5 16.7 17.8 18.4



Hardening
Harden from a temperature of 1180-1140oC followed by water quenching.

Tempering
Tempering temperature: 730-780oC, air.

Mechanical properties at ambient temperature
Condition: Precipitation hardened
Hardness: 28 HRC
0.2 % proof stress: 550 N/mm2
Tensile strength: 900-1150 N/mm2
Elongation: 8 %
Reduction: 10 %

Tensile Strength (N/mm2) vs. Temperature (oC)

500oC 550oC 600oC 650oC 700oC 750oC 800oC
640 590 540 490 440 360 290



0.2 % proof stress (N/mm2 vs. Temperature (oC)

500oC 550oC 600oC 650oC 700oC 750oC 800oC
300 280 250 230 220 200 170

Forging
Hot forming temperature: 1100-950oC.

Machinability
The machining properties of this steel are comparable to the standard 18-8 stainless steels, such as types 302, 304, etc.

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