Ovako 25CrMo4 SS142225 (1986)* (ref) Steel, Hardening

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Ovako 25CrMo4 SS142225 (1986)* (ref) Steel, Hardening
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 9000 Series Steel
Material Notes:	General Information: Grade Ovako 322A and 322D are Cr and Mo alloyed quench and tempering steel with low carbon content. The steel combine high strength with high toughness. Variant 322A correspond to the EN grade 25CrMo4. Variant 322D corresponds to SAE 4130 / 30CrMo4*. Suitable for flame or induction hardening. Variant 6014 is EN grade 25CrMo4 M-steel Delivered as rolled, soft annealed normalized or quench and tempered. Weldable under certain conditions. Information provided by Ovako
Key Words:	9224 - 27CrMo4-2, 30CrMo4*, 30CrMo4, SS2225, 4130
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Physical Properties	Original Value	Comments

Density	7.80 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	185 - 230 @Thickness <=160 mm	All formats
	235 - 285 @Thickness <=100 mm	All formats
	270 - 325 @Thickness <=400 mm	All formats
Tensile Strength	340 - 780 MPa @Thickness <=160 mm	All formats
	800 - 950 MPa @Thickness <=100 mm	All formats
	900 - 1100 MPa @Thickness <=400 mm	All formats
Tensile Strength, Yield	>= 410 MPa @Thickness <=160 mm	All formats
	>= 600 MPa @Thickness <=100 mm	All formats
	>= 700 MPa @Thickness <=400 mm	All formats
Elongation at Break	13 % @Thickness <=400 mm	All formats
	15 % @Thickness <=100 mm	All formats
	16 % @Thickness <=160 mm	All formats
Reduction of Area	13 % @Thickness <=400 mm	All formats
	15 % @Thickness <=100 mm	All formats
	16 % @Thickness <=160 mm	All formats
Modulus of Elasticity	210 GPa
Poissons Ratio	0.30
Shear Modulus	80.0 GPa

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000200 - 0.00000250 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	12.0 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.460 - 0.480 J/g-°C @Temperature 50.0 - 100 °C
Thermal Conductivity	40.0 - 45.0 W/m-K	Ambient temperature
Transformation Temperature	391 °C	MS
	746 °C	AC1
	826 °C	AC3

Component Elements Properties	Original Value	Comments
Carbon, C	0.22 - 0.29 %
Chromium, Cr	0.90 - 1.2 %
Iron, Fe	96.84 - 98.03 %	As Balance
Manganese, Mn	0.60 - 0.90 %
Molybdenum, Mo	0.15 - 0.30 %
Phosphorus, P	<= 0.035 %
Silicon, Si	0.10 - 0.40 %
Sulfur, S	<= 0.035 %

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NOVAKO203 / 234502

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