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ASTM A387 Grade 5 Steel vs. S20910 Stainless Steel

Both ASTM A387 grade 5 steel and S20910 stainless steel are iron alloys. They have 63% of their average alloy composition in common. 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 ASTM A387 grade 5 steel and the bottom bar is S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
230 to 290
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20 to 21
14 to 39
Fatigue Strength, MPa 160 to 240
310 to 460
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
79
Shear Strength, MPa 310 to 380
500 to 570
Tensile Strength: Ultimate (UTS), MPa 500 to 600
780 to 940
Tensile Strength: Yield (Proof), MPa 230 to 350
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 510
1080
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
13
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
4.8
Embodied Energy, MJ/kg 23
68
Embodied Water, L/kg 69
180

Common Calculations

PREN (Pitting Resistance) 6.8
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 110
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
460 to 1640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18 to 21
28 to 33
Strength to Weight: Bending, points 18 to 20
24 to 27
Thermal Diffusivity, mm2/s 11
3.6
Thermal Shock Resistance, points 14 to 17
17 to 21

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.060
Chromium (Cr), % 4.0 to 6.0
20.5 to 23.5
Iron (Fe), % 92.1 to 95.3
52.1 to 62.1
Manganese (Mn), % 0.3 to 0.6
4.0 to 6.0
Molybdenum (Mo), % 0.45 to 0.65
1.5 to 3.0
Nickel (Ni), % 0
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0 to 0.025
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3

Comparable Variants