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EN 1.4971 Stainless Steel vs. ASTM A387 Grade 5 Steel

Both EN 1.4971 stainless steel and ASTM A387 grade 5 steel 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 (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 ASTM A387 grade 5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
20 to 21
Fatigue Strength, MPa 270
160 to 240
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
74
Shear Strength, MPa 530
310 to 380
Tensile Strength: Ultimate (UTS), MPa 800
500 to 600
Tensile Strength: Yield (Proof), MPa 340
230 to 350

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
4.3
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.6
1.7
Embodied Energy, MJ/kg 110
23
Embodied Water, L/kg 300
69

Common Calculations

PREN (Pitting Resistance) 38
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 280
140 to 320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
18 to 21
Strength to Weight: Bending, points 23
18 to 20
Thermal Diffusivity, mm2/s 3.4
11
Thermal Shock Resistance, points 19
14 to 17

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.15
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
92.1 to 95.3
Manganese (Mn), % 0 to 2.0
0.3 to 0.6
Molybdenum (Mo), % 2.5 to 3.5
0.45 to 0.65
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 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.025
Tungsten (W), % 2.0 to 3.0
0