A4-20H

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Japan JIS A4-20H Mechanical properties of corrosion-resistant stainless steel fasteners-Part 4:Tapping screws and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A4-20H / A4-20H

Category	Grade	Standard	Region/Area	Standard Content
Metals	A4-20H	JIS B1054-4	Japan	Mechanical properties of corrosion-resistant stainless steel fasteners-Part 4:Tapping screws

Chemical composition(mass fraction)(wt.%) of the A4-20H

Element	Min	Max	Similar
C	-	0.0800	-
Mn	-	2.0000	-
P	-	0.0450	-
S	-	0.0300	-
Si	-	1.0000	-
Ni	10.0000	15.0000	-
Cr	16.0000	18.5000	-
Mo	2.0000	3.0000	-
Cu	-	4.0000	-

Mechanical Properties of steel grade A4-20H

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
158 (≥)	696 (≥)	12	44	32	Solution and Aging, Annealing, Ausaging, Q+T,etc	144

Physical Properties of steel grade A4-20H

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	-
872	145	-	42.3	212		-
423	-	12	31.2			143	221

Heat Treatment of steel grade A4-20H

Heat treated : 1559°C - 1858°C

Technological Curves of steel grade A4-20H

No Curve

Cross Reference Table (Equivalent Grade) of A4-20H

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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