20MnB4

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Germany DIN 20MnB4 具有steels and nickel alloys for fasteners with specified elevated and/or low temperature properties and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20MnB4 / 20MnB4

Category	Grade	Standard	Region/Area	Standard Content
Metals	20MnB4	DIN EN 10269	Germany	具有steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Chemical composition(mass fraction)(wt.%) of the 20MnB4

Element	Min	Max	Similar
Cu	-	0.2500	-
Cr	-	0.3000	-
B	0.0008	0.0050	-
Al	0.0200	-	-
S	-	0.0250	-
P	-	0.0250	-
Mn	0.9000	1.2000	-
Si	-	0.3000	-
C	0.1800	0.2300	-

Mechanical Properties of steel grade 20MnB4

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)
227 (≥)	229 (≥)	14	12	14	Solution and Aging, Annealing, Ausaging, Q+T,etc	432

Physical Properties of steel grade 20MnB4

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
23	-	-			0.12	-
961	138	-	33.3	141		-
952	-	44	21.2			232	411

Heat Treatment of steel grade 20MnB4

Heat treated : 1412°C - 1389°C

Technological Curves of steel grade 20MnB4

No Curve

Cross Reference Table (Equivalent Grade) of 20MnB4

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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