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EN 1.4971 Stainless Steel vs. SAE-AISI 1039 Steel

Both EN 1.4971 stainless steel and SAE-AISI 1039 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 1039 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
180 to 200
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
14 to 18
Fatigue Strength, MPa 270
230 to 370
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 530
380 to 420
Tensile Strength: Ultimate (UTS), MPa 800
610 to 690
Tensile Strength: Yield (Proof), MPa 340
340 to 580

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
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
18
Embodied Water, L/kg 300
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
88 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 280
310 to 890
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
22 to 24
Strength to Weight: Bending, points 23
20 to 22
Thermal Diffusivity, mm2/s 3.4
14
Thermal Shock Resistance, points 19
19 to 22

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.37 to 0.44
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
98.5 to 98.9
Manganese (Mn), % 0 to 2.0
0.7 to 1.0
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