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ASTM Grade HI Steel vs. AWS E312

Both ASTM grade HI steel and AWS E312 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 (11, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HI steel and the bottom bar is AWS E312.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
25
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 79
80
Tensile Strength: Ultimate (UTS), MPa 550
740

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Melting Completion (Liquidus), °C 1400
1410
Melting Onset (Solidus), °C 1350
1360
Specific Heat Capacity, J/kg-K 490
480
Thermal Expansion, µm/m-K 17
15

Otherwise Unclassified Properties

Base Metal Price, % relative 23
20
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.1
3.6
Embodied Energy, MJ/kg 59
52
Embodied Water, L/kg 200
200

Common Calculations

PREN (Pitting Resistance) 29
31
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
27
Strength to Weight: Bending, points 19
24
Thermal Shock Resistance, points 12
18

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.15
Chromium (Cr), % 26 to 30
28 to 32
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 46.9 to 59.8
52.3 to 63.5
Manganese (Mn), % 0 to 2.0
0.5 to 2.5
Molybdenum (Mo), % 0 to 0.5
0 to 0.75
Nickel (Ni), % 14 to 18
8.0 to 10.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030