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STH 21

Favorite Datasheet

Japan JIS STH21 高压气瓶用无缝钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STH21 / STH 21
Category Grade Standard Region/Area Standard Content
Metals STH 21 JIS G3429 Japan 高压气瓶用无缝钢管

Chemical composition(mass fraction)(wt.%) of the STH 21

Element Min Max Similar
Mo 0.1500 0.3000 -
Cr 0.8000 1.2000 -
Ni - 0.2500 -
S - 0.0300 -
P - 0.0300 -
Mn 0.4000 0.9000 -
Si 0.1500 0.3500 -
C 0.2500 0.3500 -

Mechanical Properties of steel grade STH 21

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
987 (≥) 968 (≥) 43 23 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade STH 21

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
32 - -     0.14 -  
738 146 - 34.3 243   -  
442 - 24 23.2   421 412

Heat Treatment of steel grade STH 21

Heat treated : 1873°C - 1466°C

Technological Curves of steel grade STH 21

Cross Reference Table (Equivalent Grade) of STH 21

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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