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ASTM A387 Grade 9 Steel vs. EN 1.4913 Stainless Steel

Both ASTM A387 grade 9 steel and EN 1.4913 stainless steel are iron alloys. They have a very high 97% 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 1.4913 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 21
14 to 22
Fatigue Strength, MPa 160 to 240
320 to 480
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
75
Shear Strength, MPa 310 to 380
550 to 590
Tensile Strength: Ultimate (UTS), MPa 500 to 600
870 to 980
Tensile Strength: Yield (Proof), MPa 230 to 350
480 to 850

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Mechanical, °C 600
700
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 26
24
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 10
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
9.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.1
2.9
Embodied Energy, MJ/kg 28
41
Embodied Water, L/kg 87
97

Common Calculations

PREN (Pitting Resistance) 12
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 110
130 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 310
600 to 1860
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18 to 21
31 to 35
Strength to Weight: Bending, points 18 to 20
26 to 28
Thermal Diffusivity, mm2/s 6.9
6.5
Thermal Shock Resistance, points 14 to 17
31 to 34

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0 to 0.0015
Carbon (C), % 0 to 0.15
0.17 to 0.23
Chromium (Cr), % 8.0 to 10
10 to 11.5
Iron (Fe), % 87.1 to 90.8
84.5 to 88.3
Manganese (Mn), % 0.3 to 0.6
0.4 to 0.9
Molybdenum (Mo), % 0.9 to 1.1
0.5 to 0.8
Nickel (Ni), % 0
0.2 to 0.6
Niobium (Nb), % 0
0.25 to 0.55
Nitrogen (N), % 0
0.050 to 0.1
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.015
Vanadium (V), % 0 to 0.040
0.1 to 0.3

Comparable Variants