28 CrMoNiV 4 9

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Germany SEW 28CrMoNiV49 Steels for larger forgings for components in turbine and generator installations and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 28CrMoNiV49 / 28 CrMoNiV 4 9

Category	Grade	Standard	Region/Area	Standard Content
Metals	28 CrMoNiV 4 9	SEW 555	Germany	Steels for larger forgings for components in turbine and generator installations

Chemical composition(mass fraction)(wt.%) of the 28 CrMoNiV 4 9

Element	Min	Max	Similar
V	0.2500	0.3500	-
Si	-	0.3000	-
S	-	0.0180	-
P	-	0.0150	-
Ni	0.5000	0.7500	-
Mo	0.8000	1.0000	-
Mn	0.3000	0.8000	-
Cr	1.1000	1.4000	-
C	0.2500	0.3000	-

Mechanical Properties of steel grade 28 CrMoNiV 4 9

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)
671 (≥)	564 (≥)	41	32	22	Solution and Aging, Annealing, Ausaging, Q+T,etc	223

Physical Properties of steel grade 28 CrMoNiV 4 9

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
14	-	-			0.21	-
964	348	-	24.3	113		-
748	-	13	31.2			232	232

Heat Treatment of steel grade 28 CrMoNiV 4 9

Heat treated : 1617°C - 1358°C

Technological Curves of steel grade 28 CrMoNiV 4 9

No Curve

Cross Reference Table (Equivalent Grade) of 28 CrMoNiV 4 9

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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