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EN 1.4981 Stainless Steel vs. S32050 Stainless Steel

Both EN 1.4981 stainless steel and S32050 stainless steel are iron alloys. They have 83% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4981 stainless steel and the bottom bar is S32050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
220
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 39
46
Fatigue Strength, MPa 210
340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
81
Shear Strength, MPa 420
540
Tensile Strength: Ultimate (UTS), MPa 610
770
Tensile Strength: Yield (Proof), MPa 240
370

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 520
440
Maximum Temperature: Mechanical, °C 940
1100
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
12
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 25
31
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 4.8
6.0
Embodied Energy, MJ/kg 67
81
Embodied Water, L/kg 150
210

Common Calculations

PREN (Pitting Resistance) 22
48
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
290
Resilience: Unit (Modulus of Resilience), kJ/m3 150
330
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21
27
Strength to Weight: Bending, points 20
23
Thermal Diffusivity, mm2/s 4.3
3.3
Thermal Shock Resistance, points 14
17

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.030
Chromium (Cr), % 15.5 to 17.5
22 to 24
Copper (Cu), % 0
0 to 0.4
Iron (Fe), % 59.6 to 66.7
43.1 to 51.8
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 1.6 to 2.0
6.0 to 6.6
Nickel (Ni), % 15.5 to 17.5
20 to 23
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0
0.21 to 0.32
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0.3 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020