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EN 1.4971 Stainless Steel vs. AISI 441 Stainless Steel

Both EN 1.4971 stainless steel and AISI 441 stainless steel are iron alloys. They have 51% of their average alloy composition in common. There are 31 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 1.4971 stainless steel and the bottom bar is AISI 441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
170
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
23
Fatigue Strength, MPa 270
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 530
300
Tensile Strength: Ultimate (UTS), MPa 800
470
Tensile Strength: Yield (Proof), MPa 340
270

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 570
550
Maximum Temperature: Mechanical, °C 1100
910
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
23
Thermal Expansion, µm/m-K 15
10

Otherwise Unclassified Properties

Base Metal Price, % relative 70
13
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 7.6
2.8
Embodied Energy, MJ/kg 110
41
Embodied Water, L/kg 300
130

Common Calculations

PREN (Pitting Resistance) 38
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
92
Resilience: Unit (Modulus of Resilience), kJ/m3 280
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
17
Strength to Weight: Bending, points 23
17
Thermal Diffusivity, mm2/s 3.4
6.1
Thermal Shock Resistance, points 19
16

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.030
Chromium (Cr), % 20 to 22.5
17.5 to 19.5
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
76 to 82.2
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0 to 1.0
Niobium (Nb), % 0.75 to 1.3
0.3 to 0.9
Nitrogen (N), % 0.1 to 0.2
0 to 0.030
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0.1 to 0.5
Tungsten (W), % 2.0 to 3.0
0