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ASTM Grade HL Steel vs. S31730 Stainless Steel

Both ASTM grade HL steel and S31730 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HL steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
40
Fatigue Strength, MPa 150
170
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 500
540
Tensile Strength: Yield (Proof), MPa 270
200

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Corrosion, °C 460
420
Maximum Temperature: Mechanical, °C 1100
990
Melting Completion (Liquidus), °C 1390
1430
Melting Onset (Solidus), °C 1340
1390
Specific Heat Capacity, J/kg-K 490
470
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 27
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 4.5
4.6
Embodied Energy, MJ/kg 65
63
Embodied Water, L/kg 210
180

Common Calculations

PREN (Pitting Resistance) 31
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
170
Resilience: Unit (Modulus of Resilience), kJ/m3 180
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 18
18
Thermal Shock Resistance, points 11
12

Alloy Composition

Carbon (C), % 0.2 to 0.6
0 to 0.030
Chromium (Cr), % 28 to 32
17 to 19
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 40.8 to 53.8
52.4 to 61
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
3.0 to 4.0
Nickel (Ni), % 18 to 22
15 to 16.5
Nitrogen (N), % 0
0 to 0.045
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 0.010