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AISI 304L Stainless Steel vs. S31730 Stainless Steel

Both AISI 304L stainless steel and S31730 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 304L stainless steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 350
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 6.7 to 46
40
Fatigue Strength, MPa 170 to 430
170
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 79
78
Shear Modulus, GPa 77
77
Shear Strength, MPa 370 to 680
370
Tensile Strength: Ultimate (UTS), MPa 540 to 1160
540
Tensile Strength: Yield (Proof), MPa 190 to 870
200

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 540
990
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 16
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 3.1
4.6
Embodied Energy, MJ/kg 44
63
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 20
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 240
170
Resilience: Unit (Modulus of Resilience), kJ/m3 92 to 1900
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19 to 41
19
Strength to Weight: Bending, points 19 to 31
18
Thermal Shock Resistance, points 12 to 25
12

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 18 to 20
17 to 19
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 65 to 74
52.4 to 61
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 8.0 to 12
15 to 16.5
Nitrogen (N), % 0 to 0.1
0 to 0.045
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010