AISI 6150 Steel Round Bar Sheet Plate, ISO 51CrV4, 1.8159

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 round bar sheet plate properties, chemical composition and heat treatment as below.

6150 Steel Round Bar Sheet Plate Supply Range
Round BarDiameter:8-1000mm; Length: Can be customized;
Other specifications can be customized.
Black Surface/Bright Surface /Grinded/Peeled/Turned
As per given requirements.
Sheet/Plate/SlabThickness: 10-800mm; Width: 200–3000mm;
Length: Can be customized.
Other specifications can be customized.
Black Surface/Bright Surface /Grinded/Peeled/Turned
As per given requirements.

6150 Steel Grade Equivalent Chart

Country China USA Germany/UK/France JAPAN ISO
Standard GB/T 1222-2007 ASTM A29/A29M-05 EN 10089-2002 JIS G4801-2005 ISO 683/14:2004
Grades 50CrVA (A23503) 6150 51CrV4(1.8159) SUP10 51CrV4

1.8159 Steel Chemical Composition

STAND C(%) Mn(%) P(%) S(%) Si(%) Cr(%) V(%) Ni(%) Cu(%)
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 / /

6150 Steel Physical Properties

Properties Metric Imperial
Density 7.85 g/cm³ 0.284 lb/in³

6150 Steel Mechanical Properties

Properties Metric Imperial
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, Brinell 197 197
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

51CrV4 Steel Application

  1. 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.
  2. 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.
  3. It can also be used for the overall quenching of steel for plastic molds and die-casting molds.

6150 Steel Round Bar Sheet Plate 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 Round Bar Plate Sheet Suppliers

We are a professional special steel stockist and supplier with a high-quality stand for many years. We have our own cutting and processing equipment. Specifications can be cut and customized according to your requirements. As a professional 51CrV4 steel supplier, please contacts us for any request for it. Songshun Steel always with you.

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