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EN 1.4981 Stainless Steel vs. AISI 316N Stainless Steel

Both EN 1.4981 stainless steel and AISI 316N stainless steel are iron alloys. They have a moderately high 95% 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 AISI 316N stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
9.0 to 39
Fatigue Strength, MPa 210
230 to 450
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 420
420 to 690
Tensile Strength: Ultimate (UTS), MPa 610
620 to 1160
Tensile Strength: Yield (Proof), MPa 240
270 to 870

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 520
410
Maximum Temperature: Mechanical, °C 940
940
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 25
19
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.8
3.9
Embodied Energy, MJ/kg 67
53
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 22
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
95 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 150
180 to 1880
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21
22 to 41
Strength to Weight: Bending, points 20
20 to 31
Thermal Diffusivity, mm2/s 4.3
4.1
Thermal Shock Resistance, points 14
14 to 26

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.080
Chromium (Cr), % 15.5 to 17.5
16 to 18
Iron (Fe), % 59.6 to 66.7
61.9 to 71.9
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 1.6 to 2.0
2.0 to 3.0
Nickel (Ni), % 15.5 to 17.5
10 to 14
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0
0.1 to 0.16
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.3 to 0.6
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030