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EN 1.4971 Stainless Steel vs. SAE-AISI 1345 Steel

Both EN 1.4971 stainless steel and SAE-AISI 1345 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 (4, 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 1345 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
170 to 210
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
11 to 23
Fatigue Strength, MPa 270
230 to 390
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
72
Shear Strength, MPa 530
370 to 440
Tensile Strength: Ultimate (UTS), MPa 800
590 to 730
Tensile Strength: Yield (Proof), MPa 340
330 to 620

Thermal Properties

Latent Heat of Fusion, J/g 300
250
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
1.9
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
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
78 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 280
290 to 1040
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
21 to 26
Strength to Weight: Bending, points 23
20 to 23
Thermal Diffusivity, mm2/s 3.4
14
Thermal Shock Resistance, points 19
19 to 23

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.43 to 0.48
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
97.2 to 97.8
Manganese (Mn), % 0 to 2.0
1.6 to 1.9
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 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.040
Tungsten (W), % 2.0 to 3.0
0