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A20

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Russia GOST A20 Constructional rolled steel of improved and high cutting machinability. Specification and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A20 / A20
Category Grade Standard Region/Area Standard Content
Metals A20 GOST 1414 Russia Constructional rolled steel of improved and high cutting machinability. Specification

Chemical composition(mass fraction)(wt.%) of the A20

Element Min Max Similar
Si 0.1500 0.3500 -
S 0.0800 0.1500 -
P - 0.0600 -
Mn 0.7000 1.0000 -
Cu - 0.2500 -
C 0.1700 0.2500 -

Mechanical Properties of steel grade A20

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)
652 (≥) 342 (≥) 12 21 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade A20

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 - -     0.43 -  
964 264 - 41.3 432   -  
267 - 23 33.2   211 222

Heat Treatment of steel grade A20

Heat treated : 1567°C - 1656°C

Technological Curves of steel grade A20

Cross Reference Table (Equivalent Grade) of A20

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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