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ASTM Grade HP Steel vs. AWS E320

Both ASTM grade HP steel and AWS E320 are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is AWS E320.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.1
34
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 490
620

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Melting Completion (Liquidus), °C 1370
1410
Melting Onset (Solidus), °C 1330
1360
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 16
14

Otherwise Unclassified Properties

Base Metal Price, % relative 34
38
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 5.8
6.5
Embodied Energy, MJ/kg 82
91
Embodied Water, L/kg 220
220

Common Calculations

PREN (Pitting Resistance) 27
28
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
21
Strength to Weight: Bending, points 17
20
Thermal Shock Resistance, points 11
16

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.070
Chromium (Cr), % 24 to 28
19 to 21
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 29.2 to 42.7
31.8 to 43.5
Manganese (Mn), % 0 to 2.0
0.5 to 2.5
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 33 to 37
32 to 36
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.5
0 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.030