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SAE-AISI 9255 Steel vs. EN 1.0033 Steel

Both SAE-AISI 9255 steel and EN 1.0033 steel are iron alloys. They have a very high 97% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI 9255 steel and the bottom bar is EN 1.0033 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
86 to 96
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
17 to 32
Fatigue Strength, MPa 270
120 to 140
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 430
200
Tensile Strength: Ultimate (UTS), MPa 680
300 to 330
Tensile Strength: Yield (Proof), MPa 390
150 to 200

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1430
1470
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 46
53
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
1.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
18
Embodied Water, L/kg 46
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
48 to 83
Resilience: Unit (Modulus of Resilience), kJ/m3 400
63 to 100
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
10 to 12
Strength to Weight: Bending, points 22
13 to 14
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 21
9.4 to 10

Alloy Composition

Carbon (C), % 0.51 to 0.59
0 to 0.11
Iron (Fe), % 96.2 to 97
98.8 to 100
Manganese (Mn), % 0.7 to 1.0
0 to 0.7
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 1.8 to 2.2
0 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.045