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EN 1.4971 Stainless Steel vs. SAE-AISI 1084 Steel

Both EN 1.4971 stainless steel and SAE-AISI 1084 steel are iron alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 SAE-AISI 1084 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
220 to 270
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
11
Fatigue Strength, MPa 270
320 to 370
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
72
Shear Strength, MPa 530
470 to 550
Tensile Strength: Ultimate (UTS), MPa 800
780 to 930
Tensile Strength: Yield (Proof), MPa 340
510 to 600

Thermal Properties

Latent Heat of Fusion, J/g 300
240
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
51
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
1.8
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.6
1.4
Embodied Energy, MJ/kg 110
19
Embodied Water, L/kg 300
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
81 to 89
Resilience: Unit (Modulus of Resilience), kJ/m3 280
700 to 960
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
28 to 33
Strength to Weight: Bending, points 23
24 to 27
Thermal Diffusivity, mm2/s 3.4
14
Thermal Shock Resistance, points 19
25 to 30

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.8 to 0.93
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
98.1 to 98.6
Manganese (Mn), % 0 to 2.0
0.6 to 0.9
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0 to 0.050
Tungsten (W), % 2.0 to 3.0
0