Ovako 25CrMo4 322A Steel, Hardening

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Ovako 25CrMo4 322A 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	Metric	English	Comments

Density	7.80 g/cc	0.282 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	200 @Thickness >=100 mm	200 @Thickness >=3.94 in	Round bar
	230 @Thickness >=15.0 mm	230 @Thickness >=0.591 in	Tube, wall
	230 @Thickness 40.0 - 100 mm	230 @Thickness 1.57 - 3.94 in	Round bar
	250 @Thickness <=15.0 mm	250 @Thickness <=0.591 in	Tube, wall
	250 @Thickness <=40.0 mm	250 @Thickness <=1.57 in	Round bar
Tensile Strength	620 MPa @Thickness >=100 mm	89900 psi @Thickness >=3.94 in	Round bar
	730 MPa @Thickness >=15.0 mm	106000 psi @Thickness >=0.591 in	Tube, wall
	730 MPa @Thickness 40.0 - 100 mm	106000 psi @Thickness 1.57 - 3.94 in	Round bar
	800 MPa @Thickness <=40.0 mm	116000 psi @Thickness <=1.57 in	Round bar
	800 MPa @Thickness <=15.0 mm	116000 psi @Thickness <=0.591 in	Tube, wall
Tensile Strength, Yield	>= 490 MPa @Thickness >=100 mm	>= 71100 psi @Thickness >=3.94 in	Round bar
	>= 600 MPa @Thickness 40.0 - 100 mm	>= 87000 psi @Thickness 1.57 - 3.94 in	Round bar
	>= 600 MPa @Thickness >=15.0 mm	>= 87000 psi @Thickness >=0.591 in	Tube, wall
	>= 680 MPa @Thickness <=40.0 mm	>= 98600 psi @Thickness <=1.57 in	Round bar
	>= 680 MPa @Thickness <=15.0 mm	>= 98600 psi @Thickness <=0.591 in	Tube, wall
Elongation at Break	15 % @Thickness <=15.0 mm	15 % @Thickness <=0.591 in	Tube, wall
	15 % @Thickness >=15.0 mm	15 % @Thickness >=0.591 in	Tube, wall
	15 % @Thickness <=40.0 mm	15 % @Thickness <=1.57 in	Round bar
	15 % @Thickness 40.0 - 100 mm	15 % @Thickness 1.57 - 3.94 in	Round bar
	15 % @Thickness >=100 mm	15 % @Thickness >=3.94 in	Round bar
Reduction of Area	15 % @Thickness <=15.0 mm	15 % @Thickness <=0.591 in	Tube, wall
	15 % @Thickness >=15.0 mm	15 % @Thickness >=0.591 in	Tube, wall
	15 % @Thickness <=40.0 mm	15 % @Thickness <=1.57 in	Round bar
	15 % @Thickness 40.0 - 100 mm	15 % @Thickness 1.57 - 3.94 in	Round bar
	15 % @Thickness >=100 mm	15 % @Thickness >=3.94 in	Round bar
Modulus of Elasticity	210 GPa	30500 ksi
Poissons Ratio	0.30	0.30
Shear Modulus	80.0 GPa	11600 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000200 - 0.00000250 ohm-cm	0.00000200 - 0.00000250 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	12.0 µm/m-°C @Temperature 20.0 - 300 °C	6.67 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.460 - 0.480 J/g-°C @Temperature 50.0 - 100 °C	0.110 - 0.115 BTU/lb-°F @Temperature 122 - 212 °F
Thermal Conductivity	40.0 - 45.0 W/m-K	278 - 312 BTU-in/hr-ft²-°F	Ambient temperature
Transformation Temperature	391 °C	736 °F	MS
	746 °C	1370 °F	AC1
	826 °C	1520 °F	AC3

Component Elements Properties	Metric	English	Comments
Carbon, C	0.22 - 0.28 %	0.22 - 0.28 %
Chromium, Cr	0.90 - 1.15 %	0.90 - 1.15 %
Iron, Fe	96.66 - 98.01 %	96.66 - 98.01 %	As Balance
Manganese, Mn	0.60 - 0.90 %	0.60 - 0.90 %
Molybdenum, Mo	0.15 - 0.30 %	0.15 - 0.30 %
Nickel, Ni	<= 0.25 %	<= 0.25 %
Phosphorus, P	<= 0.025 %	<= 0.025 %
Silicon, Si	0.10 - 0.40 %	0.10 - 0.40 %
Sulfur, S	0.020 - 0.035 %	0.020 - 0.035 %

Descriptive Properties
Weldability	CEV 0.78_max
	Pcm 0.45_max

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NOVAKO200 / 234499

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