ASTM A387 Grade 5 Class 1 Steel
Alloy Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength500MPa
Yield Strength230MPa
Brinell Hardness150HB
Maximum Service Temperature510°C
Chemical Composition
C
0 to 0.15%
CR
4.0 to 6.0%
MO
0.45 to 0.65%
MN
0.3 to 0.6%
SI
0 to 0.5%
P
0 to 0.025%
S
0 to 0.025%
FE
92.1 to 95.3%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
20 %
Fatigue Strength
160 MPa
Poisson's Ratio
0.29
Shear Modulus
74 GPa
Shear Strength
310 MPa
Tensile Strength: Ultimate (UTS)
500 MPa
Tensile Strength: Yield (Proof)
230 MPa
Hardness
Brinell Hardness
150
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
260 J/g
Maximum Temperature: Mechanical
510 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
40 W/m-K
Thermal Diffusivity
11 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
14 points
Electrical
Electrical Conductivity: Equal Volume
8.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
9.2 % IACS
Calculated
PREN (Pitting Resistance)
6.8
Resilience: Ultimate (Unit Rupture Work)
83 MJ/m 3
Resilience: Unit (Modulus of Resilience)
140 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
18 points
Environmental
Base Metal Price
4.3 % relative
Embodied Carbon
1.7 kg CO 2 /kg material
Embodied Energy
23 MJ/kg
Embodied Energy
23 MJ/kg 10 x 10 3 BTU/lb
Embodied Water
69 L/kg
Embodied Water
69 L/kg 8.2 gal/lb
Registered Designations & Aliases
ASTM A387 Grade 5 Class 1 Steel
Standards
ASTM A387 ASTM A387: Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum
ASTM A387 ASTM A387: Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011