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S31727 Stainless Steel vs. AISI 310MoLN Stainless Steel

Both S31727 stainless steel and AISI 310MoLN stainless steel are iron alloys. Both are furnished in the annealed condition. They have 86% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is AISI 310MoLN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
28
Fatigue Strength, MPa 240
210
Poisson's Ratio 0.28
0.28
Reduction in Area, % 56
45
Rockwell B Hardness 83
84
Shear Modulus, GPa 78
80
Shear Strength, MPa 430
400
Tensile Strength: Ultimate (UTS), MPa 630
610
Tensile Strength: Yield (Proof), MPa 270
290

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1010
1100
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 24
28
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.7
5.0
Embodied Energy, MJ/kg 64
70
Embodied Water, L/kg 180
200

Common Calculations

PREN (Pitting Resistance) 35
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
140
Resilience: Unit (Modulus of Resilience), kJ/m3 190
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
21
Strength to Weight: Bending, points 20
20
Thermal Shock Resistance, points 14
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.020
Chromium (Cr), % 17.5 to 19
24 to 26
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
45.2 to 53.8
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 3.8 to 4.5
1.6 to 2.6
Nickel (Ni), % 14.5 to 16.5
20.5 to 23.5
Nitrogen (N), % 0.15 to 0.21
0.090 to 0.15
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010