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ASTM A387 Grade 9 Steel vs. EN 1.4542 Stainless Steel

Both ASTM A387 grade 9 steel and EN 1.4542 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 9 steel and the bottom bar is EN 1.4542 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 21
5.7 to 20
Fatigue Strength, MPa 160 to 240
370 to 640
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Shear Strength, MPa 310 to 380
550 to 860
Tensile Strength: Ultimate (UTS), MPa 500 to 600
880 to 1470
Tensile Strength: Yield (Proof), MPa 230 to 350
580 to 1300

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Mechanical, °C 600
860
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
16
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.1
2.7
Embodied Energy, MJ/kg 28
39
Embodied Water, L/kg 87
130

Common Calculations

PREN (Pitting Resistance) 12
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 110
62 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 310
880 to 4360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18 to 21
31 to 52
Strength to Weight: Bending, points 18 to 20
26 to 37
Thermal Diffusivity, mm2/s 6.9
4.3
Thermal Shock Resistance, points 14 to 17
29 to 49

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.070
Chromium (Cr), % 8.0 to 10
15 to 17
Copper (Cu), % 0
3.0 to 5.0
Iron (Fe), % 87.1 to 90.8
69.6 to 79
Manganese (Mn), % 0.3 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.9 to 1.1
0 to 0.6
Nickel (Ni), % 0
3.0 to 5.0
Niobium (Nb), % 0
0 to 0.45
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.025
0 to 0.015
Vanadium (V), % 0 to 0.040
0