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EN 1.4376 Stainless Steel vs. EN 1.4981 Stainless Steel

Both EN 1.4376 stainless steel and EN 1.4981 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 84% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4376 stainless steel and the bottom bar is EN 1.4981 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
39
Fatigue Strength, MPa 420
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 530
420
Tensile Strength: Ultimate (UTS), MPa 750
610
Tensile Strength: Yield (Proof), MPa 450
240

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
520
Maximum Temperature: Mechanical, °C 930
940
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
25
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.6
4.8
Embodied Energy, MJ/kg 37
67
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 21
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
190
Resilience: Unit (Modulus of Resilience), kJ/m3 520
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
21
Strength to Weight: Bending, points 24
20
Thermal Diffusivity, mm2/s 4.0
4.3
Thermal Shock Resistance, points 17
14

Alloy Composition

Carbon (C), % 0 to 0.1
0.040 to 0.1
Chromium (Cr), % 17 to 20.5
15.5 to 17.5
Iron (Fe), % 65.5 to 76
59.6 to 66.7
Manganese (Mn), % 5.0 to 8.0
0 to 1.5
Molybdenum (Mo), % 0
1.6 to 2.0
Nickel (Ni), % 2.0 to 4.5
15.5 to 17.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0.3 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.015