ASTM A514 Grade Q Steel
Alloy Steels
Property Overview
Density7.9g/cm³
Elastic Modulus190GPa
Tensile Strength790MPa
Yield Strength690MPa
Brinell Hardness240HB
Maximum Service Temperature440°C
Chemical Composition
C
0.14 to 0.21%
CR
1.0 to 1.5%
NI
1.2 to 1.5%
MO
0.4 to 0.6%
MN
1.0 to 1.3%
SI
0.15 to 0.35%
P
0 to 0.030%
S
0 to 0.030%
V
0.030 to 0.080%
FE
94.4 to 96.1%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
18 %
Fatigue Strength
470 MPa
Poisson's Ratio
0.29
Shear Modulus
73 GPa
Shear Strength
490 MPa
Tensile Strength: Ultimate (UTS)
790 MPa
Tensile Strength: Yield (Proof)
690 MPa
Hardness
Brinell Hardness
240
Physical
Density
7.9 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
440 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
37 W/m-K
Thermal Diffusivity
10 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
23 points
Electrical
Electrical Conductivity: Equal Volume
7.6 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.8 % IACS
Calculated
PREN (Pitting Resistance)
2.9
Resilience: Ultimate (Unit Rupture Work)
140 MJ/m 3
Resilience: Unit (Modulus of Resilience)
1280 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
28 points
Strength to Weight: Bending
24 points
Environmental
Base Metal Price
3.8 % relative
Embodied Carbon
1.8 kg CO 2 /kg material
Embodied Energy
25 MJ/kg
Embodied Energy
25 MJ/kg 11 x 10 3 BTU/lb
Embodied Water
57 L/kg
Embodied Water
57 L/kg 6.8 gal/lb
Registered Designations & Aliases
ASTM A514 Grade Q Steel
Standards
ASTM A514 ASTM A514: Standard Specification for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding
ASTM A514 ASTM A514: Standard Specification for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993 Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005