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EN 1.4005 Stainless Steel vs. ASTM A387 Grade 9 Steel

Both EN 1.4005 stainless steel and ASTM A387 grade 9 steel are iron alloys. They have a very high 95% 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 EN 1.4005 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, % 13 to 21
20 to 21
Fatigue Strength, MPa 240 to 290
160 to 240
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Shear Strength, MPa 390 to 450
310 to 380
Tensile Strength: Ultimate (UTS), MPa 630 to 750
500 to 600
Tensile Strength: Yield (Proof), MPa 370 to 500
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 480
470
Thermal Conductivity, W/m-K 30
26
Thermal Expansion, µm/m-K 10
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
6.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.1
Embodied Energy, MJ/kg 28
28
Embodied Water, L/kg 100
87

Common Calculations

PREN (Pitting Resistance) 14
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 110
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 650
140 to 310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23 to 27
18 to 21
Strength to Weight: Bending, points 21 to 24
18 to 20
Thermal Diffusivity, mm2/s 8.1
6.9
Thermal Shock Resistance, points 23 to 27
14 to 17

Alloy Composition

Carbon (C), % 0.060 to 0.15
0 to 0.15
Chromium (Cr), % 12 to 14
8.0 to 10
Iron (Fe), % 82.4 to 87.8
87.1 to 90.8
Manganese (Mn), % 0 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.6
0.9 to 1.1
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0.15 to 0.35
0 to 0.025
Vanadium (V), % 0
0 to 0.040

Comparable Variants