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ASTM A225 Steel vs. EN 1.4418 Stainless Steel

Both ASTM A225 steel and EN 1.4418 stainless steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A225 steel and the bottom bar is EN 1.4418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21 to 23
16 to 20
Fatigue Strength, MPa 330 to 390
350 to 480
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 390 to 520
530 to 620
Tensile Strength: Ultimate (UTS), MPa 620 to 830
860 to 1000
Tensile Strength: Yield (Proof), MPa 460 to 550
540 to 790

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
870
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
15
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.8
2.8
Embodied Energy, MJ/kg 24 to 25
39
Embodied Water, L/kg 48
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 170
130 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 820
730 to 1590
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 29
31 to 36
Strength to Weight: Bending, points 21 to 25
26 to 28
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 18 to 24
31 to 36

Comparable Variants