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AWS E320LR vs. ASTM Grade HT Steel

Both AWS E320LR and ASTM grade HT steel are iron alloys. They have a moderately high 90% 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 AWS E320LR and the bottom bar is ASTM grade HT steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
4.6
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 580
500

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Melting Completion (Liquidus), °C 1410
1390
Melting Onset (Solidus), °C 1360
1340
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 14
15

Otherwise Unclassified Properties

Base Metal Price, % relative 36
31
Density, g/cm3 8.2
8.0
Embodied Carbon, kg CO2/kg material 6.2
5.4
Embodied Energy, MJ/kg 87
76
Embodied Water, L/kg 220
190

Common Calculations

PREN (Pitting Resistance) 28
18
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
18
Strength to Weight: Bending, points 19
18
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0 to 0.030
0.35 to 0.75
Chromium (Cr), % 19 to 21
15 to 19
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 32.7 to 42.5
38.2 to 51.7
Manganese (Mn), % 1.5 to 2.5
0 to 2.0
Molybdenum (Mo), % 2.0 to 3.0
0 to 0.5
Nickel (Ni), % 32 to 36
33 to 37
Niobium (Nb), % 0 to 0.4
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.3
0 to 2.5
Sulfur (S), % 0 to 0.015
0 to 0.040