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SNC 21 H

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Korea KS SNC21H 指定的淬透性结构钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SNC21H / SNC 21 H
Category Grade Standard Region/Area Standard Content
Metals SNC 21 H KS D 3754 Korea 指定的淬透性结构钢带

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

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni 1.9500 2.5000 -
Mn 0.3000 0.7000 -
Cu - 0.3000 -
Cr 0.2000 0.5500 -
C 0.1100 0.1800 -

Mechanical Properties of steel grade SNC 21 H

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)
393 (≥) 259 (≥) 22 13 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade SNC 21 H

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 - -     0.32 -  
799 389 - 12.3 342   -  
538 - 41 24.2   241 222

Heat Treatment of steel grade SNC 21 H

Heat treated : 1844°C - 1578°C

Technological Curves of steel grade SNC 21 H

Cross Reference Table (Equivalent Grade) of SNC 21 H

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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