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SAE-AISI 9255 Steel vs. EN 1.4805 Stainless Steel

Both SAE-AISI 9255 steel and EN 1.4805 stainless steel are iron alloys. They have 54% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 9255 steel and the bottom bar is EN 1.4805 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
9.0
Fatigue Strength, MPa 270
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Tensile Strength: Ultimate (UTS), MPa 680
490
Tensile Strength: Yield (Proof), MPa 390
250

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Mechanical, °C 400
1000
Melting Completion (Liquidus), °C 1430
1390
Melting Onset (Solidus), °C 1390
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 46
14
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
26
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 1.5
4.7
Embodied Energy, MJ/kg 20
66
Embodied Water, L/kg 46
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
37
Resilience: Unit (Modulus of Resilience), kJ/m3 400
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 13
3.7
Thermal Shock Resistance, points 21
11

Alloy Composition

Carbon (C), % 0.51 to 0.59
0.2 to 0.5
Chromium (Cr), % 0
19 to 23
Iron (Fe), % 96.2 to 97
44.9 to 56.8
Manganese (Mn), % 0.7 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
23 to 27
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 1.8 to 2.2
1.0 to 2.0
Sulfur (S), % 0 to 0.040
0 to 0.030