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1.4871, DIN X53CrMnNiN21-9, SAE EV8
1.4871, DIN X53CrMnNiN21-9, SAE EV8 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).
Production specification
Round bar standard Download
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Plate steel standard Download
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Flat bar standard Download
wire standard Download
tube standard Download
pipe standard Download
Forging standard Download
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Square-shape steel standard Download
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Billet standard Download
Flat bar standard Download
wire standard Download
tube standard Download
pipe standard Download
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casting standard Download
sheet standard Download
round bar standard Download
coil standard Download
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1.4871, DIN X53CrMnNiN21-9, SAE EV8
Designation by Standards
| Brand Name | LH No. | Mat. No. | DIN | EN | AISI |
| 28304N | 938 | 1.4871 | X53CrMnNiN21-9 | - | SAE EV8 |
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 0.53 | max. 0.25 | 9.00 | 21.00 | - | 3.87 | - | - | N=0.43 |
Description
Austenitic Cr-Mn-Ni-N-alloyed valve steel. Operating temperature up to 750oC.
Applications
Valves for engines with internal combustion, parts chemical and petrochemical industry, screws, nuts, bolts for gas turbines.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 215
Density [g/cm3]: 7.70
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 1140-1180oC followed by water quenching.
Tempering
Tempering temperature: 730-780oC, air.
Mechanical properties at ambient temperature
Condition: Quenched
0.2 % proof stress: 500 N/mm2
Tensile strength: 950-1150 N/mm2
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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