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S31727 Stainless Steel vs. EN 1.4981 Stainless Steel

Both S31727 stainless steel and EN 1.4981 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is EN 1.4981 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
39
Fatigue Strength, MPa 240
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 430
420
Tensile Strength: Ultimate (UTS), MPa 630
610
Tensile Strength: Yield (Proof), MPa 270
240

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
520
Maximum Temperature: Mechanical, °C 1010
940
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 24
25
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.7
4.8
Embodied Energy, MJ/kg 64
67
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 35
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
190
Resilience: Unit (Modulus of Resilience), kJ/m3 190
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
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
0.040 to 0.1
Chromium (Cr), % 17.5 to 19
15.5 to 17.5
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
59.6 to 66.7
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 3.8 to 4.5
1.6 to 2.0
Nickel (Ni), % 14.5 to 16.5
15.5 to 17.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 1.0
0.3 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.015