SAE-AISI 6150 (G61500) Chromium-Vanadium Steel
SAE-AISI 6150 steel is an alloy steel formulated for primary forming into wrought products. 6150 is the designation in both the SAE and AISI systems for this material. G61500 is the UNS number. It has the highest embodied energy among the SAE-AISI wrought steels in the database.
The properties of SAE-AISI 6150 steel include three common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare SAE-AISI 6150 steel to: SAE-AISI wrought steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Brinell Hardness
200 to 350
Elastic (Young's, Tensile) Modulus
190 GPa 27 x 106 psi
Elongation at Break
15 to 23 %
Fatigue Strength
300 to 750 MPa 43 to 110 x 103 psi
Poisson's Ratio
0.29
Shear Modulus
73 GPa 11 x 106 psi
Shear Strength
400 to 730 MPa 58 to 110 x 103 psi
Tensile Strength: Ultimate (UTS)
630 to 1200 MPa 91 to 170 x 103 psi
Tensile Strength: Yield (Proof)
420 to 1160 MPa 60 to 170 x 103 psi
Thermal Properties
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
420 °C 790 °F
Melting Completion (Liquidus)
1460 °C 2650 °F
Melting Onset (Solidus)
1410 °C 2580 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
46 W/m-K 27 BTU/h-ft-°F
Thermal Expansion
12 to 13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.4 % IACS
Otherwise Unclassified Properties
Base Metal Price
2.3 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
2.0 kg CO2/kg material
Embodied Energy
28 MJ/kg 12 x 103 BTU/lb
Embodied Water
51 L/kg 6.1 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
130 to 180 MJ/m3
Resilience: Unit (Modulus of Resilience)
460 to 3590 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
22 to 43 points
Strength to Weight: Bending
21 to 32 points
Thermal Diffusivity
13 mm2/s
Thermal Shock Resistance
20 to 38 points
Alloy Composition
Among alloy steels, the composition of SAE-AISI 6150 steel is notable for including vanadium (V). Vanadium has a strong hardening effect, but this effect is particularly sensitive to the type of tempering.
| Fe | 96.7 to 97.7 | |
| Cr | 0.8 to 1.1 | |
| Mn | 0.7 to 0.9 | |
| C | 0.48 to 0.53 | |
| Si | 0.15 to 0.35 | |
| V | 0.15 to 0.3 | |
| S | 0 to 0.040 | |
| P | 0 to 0.035 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM A752: Standard Specification for General Requirements for Wire Rods and Coarse Round Wire, Alloy Steel
ASTM A322: Standard Specification for Steel Bars, Alloy, Standard Grades
ASM Specialty Handbook: Carbon and Alloy Steels, J. R. Davis (editor), 1996
Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015
Steels: Processing, Structure, and Performance, 2nd ed., George Krauss, 2015