AISI 6150 • ISO 51CrV4 • 1.8159 Steel
What Is 6150 Steel
AISI 6150 steel is an alloy spring steel. It has great mechanical properties and processing properties. And it also can be called ISO 51CrV4 steel and 1.8159 steel. It has high hardenability, fatigue strength and yield strength. By the way, add the vanadium to steel to make crystalloid get smaller, decrease the overheating sensitivity, raise the strength and toughness of steel. But its weldability is not good. If you feel interested in it, you can check 6150 steel properties, chemical composition and heat treatment as below.
The Catalog of Article
51CrV4 Steel Applications
- Due to its special properties, it was used in the field of the aircraft industry, automobile, boats, ships, metallurgy, chemical industry and etc. As the material of ships, it usually is used in the low-temperature condition. So it must have great general mechanical performance at the room temperature condition. The plasticity and impact toughness of steel is related closely to the microstructure. If the strength raises, the plasticity and impact toughness of steel will decrease.
- 51CrV4 steel is a higher level of spring steel. It is good material for spring with high load and big size cross-section and the valve spring.
- It can also be used for the overall quenching of steel for plastic molds and die-casting molds.
6150 Steel Heat Treatment
The annealing processing can make it go get great machinability. Austenitizing at 1400ºF (760ºC) followed by an iso anneal at 1250ºF (680ºC.)
The standard temperature for normalizing is 1650ºF (900ºC.), then use the way of air cooling.
Austenitize 6150 steel at 1550-1625ºF (845-885). And use the oil quenching way for the small one, but the large one is to use the water quenching.
From 1000-1250ºF(540-680ºC) as per required properties.
6150 Steel Physical Properties
|Density||7.85 g/cm³||0.284 lb/in³|
51CrV4 Steel Mechanical Properties
|Tensile strength, ultimate||670 MPa||97200 psi|
|Tensile strength, yield||415 MPa||60200 psi|
|Izod impact||27 J||19.9 ft-lb|
|Modulus of elasticity||190-210 GPa||27557-30458 ksi|
|Shear modulus (typical for steel)||80 GPa||11600 ksi|
|Bulk modulus (typical for steel)||140 GPa||20300 ksi|
|Poissons ratio (calculated)||0.27 – 0.30||0.27-0.30|
|Elongation at break (in 50 mm)||23%||23%|
|Hardness, Vickers (converted from Brinell hardness)||207||207|
|Hardness, Knoop (converted from Brinell hardness)||219||219|
|Hardness, Rockwell B (converted from Brinell hardness)||92||92|
|Hardness, Rockwell C (converted from Brinell hardness, value below normal HRC range, for comparison purposes only)||13||13|
|Machinability (annealed and cold drawn. Based on 100% machinability for AISI 1212 steel)||55||55|
1.8159 Steel Chemical Composition
|GB/T 1222-2007||0.46-0.54||0.50-0.80||Max 0.025||Max 0.025||0.17-0.37||0.80-1.10||0.10-0.20||Max 0.35||Max 0.25|
|ASTM A29/A29M-05||0.48-0.53||0.70-0.90||Max 0.035||Max 0.040||0.15-0.35||0.80-1.10||Min 0.15||/||/|
|EN 10089-2002||0.47-0.55||0.70-1.10||Max 0.025||Max 0.025||Max 0.40||0.90-1.20||0.10-0.25||/||/|
|JIS G4801-2005||0.47-0.55||0.65-0.95||Max 0.030||Max 0.030||0.15-0.35||0.80-1.10||0.15-0.25||/||/|
|ISO 683/14:2004||0.47-0.55||0.70-1.10||Max 0.030||Max 0.030||Max 0.40||0.90-1.20||0.10-0.25||/||/|
51CrV4 Steel Grade Equivalent Chart
|Standard||GB/T 1222-2007||ASTM A29/A29M-05||EN 10089-2002||JIS G4801-2005||ISO 683/14:2004|
6150 steel suppliers
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