Element Weight %
C 0.25
Mn 2.00
Si 1.50
Cr 24.0-26.0
Ni 19.0-22.0
P 0.045
S 0.03
Equivalent grades:
France: AFNOR Z 12 CNS 25.20
Germany: DIN 1.4841
Italy: UNI X 16 CrNiSi 25 20 , UNI X 22 CrNi 25 20
Japan: JIS SUS Y 31O
United Kingdom: B.S. 310 S 24
United States: AMS 5694 , AMS 5695 , ASME SA182 , ASME SA213 , ASME SA249 , ASME SA312 , ASME SA358 , ASME SA403 , ASME SA409 , ASTM A167 , ASTM A182 , ASTM A213 , ASTM A249 , ASTM A276 , ASTM A312 , ASTM A314 , ASTM A358 , ASTM A403 , ASTM A409 , ASTM A473 , ASTM A511 , ASTM A580 , ASTM A632 , FED QQ-S-763 , FED QQ-S-766 , FED QQ-W-423 , FED STD-66 , MIL SPEC MIL-S-862 , SAE 30310 , SAE J405 (30310) , UNS S31000
Mechanical Properties
Density (×1000 kg/m3) 8
Poisson's Ratio 0.27-0.30
Elastic Modulus (GPa) 200
Tensile Strength (Mpa) 515
Yield Strength (Mpa) 205
Elongation (%) 40
Reduction in Area (%) 50
Hardness (HRB) 95 (max)
Thermal Properties
Thermal Expansion (10-6/ºC) 15.9
Thermal Conductivity (W/m-K) 14.2
Specific Heat (J/kg-K) 500
Electric Resistivity (10-9W-m) 780
