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EN 1.4971 Stainless Steel vs. ASTM A182 Grade F5a

Both EN 1.4971 stainless steel and ASTM A182 grade F5a are iron alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 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 ASTM A182 grade F5a.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
310
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
25
Fatigue Strength, MPa 270
380
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
74
Shear Strength, MPa 530
450
Tensile Strength: Ultimate (UTS), MPa 800
710
Tensile Strength: Yield (Proof), MPa 340
520

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Maximum Temperature: Mechanical, °C 1100
510
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
40
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
4.5
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.6
1.8
Embodied Energy, MJ/kg 110
24
Embodied Water, L/kg 300
69

Common Calculations

PREN (Pitting Resistance) 38
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
160
Resilience: Unit (Modulus of Resilience), kJ/m3 280
700
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
25
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 3.4
11
Thermal Shock Resistance, points 19
20

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.25
Chromium (Cr), % 20 to 22.5
4.0 to 6.0
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
91.4 to 95.6
Manganese (Mn), % 0 to 2.0
0 to 0.6
Molybdenum (Mo), % 2.5 to 3.5
0.44 to 0.65
Nickel (Ni), % 19 to 21
0 to 0.5
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 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 2.0 to 3.0
0