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EN 1.4981 Stainless Steel vs. AISI 446 Stainless Steel

Both EN 1.4981 stainless steel and AISI 446 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4981 stainless steel and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
23
Fatigue Strength, MPa 210
200
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 420
360
Tensile Strength: Ultimate (UTS), MPa 610
570
Tensile Strength: Yield (Proof), MPa 240
300

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 520
440
Maximum Temperature: Mechanical, °C 940
1180
Melting Completion (Liquidus), °C 1440
1510
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 25
12
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.8
2.4
Embodied Energy, MJ/kg 67
35
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 22
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
110
Resilience: Unit (Modulus of Resilience), kJ/m3 150
230
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 21
21
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 4.3
4.6
Thermal Shock Resistance, points 14
19

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.2
Chromium (Cr), % 15.5 to 17.5
23 to 27
Iron (Fe), % 59.6 to 66.7
69.2 to 77
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 1.6 to 2.0
0
Nickel (Ni), % 15.5 to 17.5
0 to 0.75
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.3 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030