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S66286 Stainless Steel vs. ASTM A387 Grade 9 Steel

Both S66286 stainless steel and ASTM A387 grade 9 steel are iron alloys. They have 65% 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 S66286 stainless steel and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 40
20 to 21
Fatigue Strength, MPa 240 to 410
160 to 240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
75
Shear Strength, MPa 420 to 630
310 to 380
Tensile Strength: Ultimate (UTS), MPa 620 to 1020
500 to 600
Tensile Strength: Yield (Proof), MPa 280 to 670
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Mechanical, °C 920
600
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
26
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
10

Otherwise Unclassified Properties

Base Metal Price, % relative 26
6.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 6.0
2.1
Embodied Energy, MJ/kg 87
28
Embodied Water, L/kg 170
87

Common Calculations

PREN (Pitting Resistance) 19
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 200
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 1150
140 to 310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 36
18 to 21
Strength to Weight: Bending, points 20 to 28
18 to 20
Thermal Diffusivity, mm2/s 4.0
6.9
Thermal Shock Resistance, points 13 to 22
14 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Boron (B), % 0.0010 to 0.010
0
Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 13.5 to 16
8.0 to 10
Iron (Fe), % 49.1 to 59.5
87.1 to 90.8
Manganese (Mn), % 0 to 2.0
0.3 to 0.6
Molybdenum (Mo), % 1.0 to 1.5
0.9 to 1.1
Nickel (Ni), % 24 to 27
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025
Titanium (Ti), % 1.9 to 2.4
0
Vanadium (V), % 0.1 to 0.5
0 to 0.040

Comparable Variants