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S45503 Stainless Steel vs. ASTM A387 Grade 9 Steel

Both S45503 stainless steel and ASTM A387 grade 9 steel are iron alloys. They have 85% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S45503 stainless steel and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 410 to 500
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 4.6 to 6.8
20 to 21
Fatigue Strength, MPa 710 to 800
160 to 240
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
75
Shear Strength, MPa 940 to 1070
310 to 380
Tensile Strength: Ultimate (UTS), MPa 1610 to 1850
500 to 600
Tensile Strength: Yield (Proof), MPa 1430 to 1700
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Mechanical, °C 760
600
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 15
6.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.4
2.1
Embodied Energy, MJ/kg 48
28
Embodied Water, L/kg 120
87

Common Calculations

PREN (Pitting Resistance) 13
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 82 to 110
83 to 110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 57 to 65
18 to 21
Strength to Weight: Bending, points 39 to 43
18 to 20
Thermal Shock Resistance, points 56 to 64
14 to 17

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.15
Chromium (Cr), % 11 to 12.5
8.0 to 10
Copper (Cu), % 1.5 to 2.5
0
Iron (Fe), % 72.4 to 78.9
87.1 to 90.8
Manganese (Mn), % 0 to 0.5
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.5
0.9 to 1.1
Nickel (Ni), % 7.5 to 9.5
0
Niobium (Nb), % 0.1 to 0.5
0
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.025
Titanium (Ti), % 1.0 to 1.4
0
Vanadium (V), % 0
0 to 0.040