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EN 1.7365 Steel vs. SAE-AISI 9255 Steel

Both EN 1.7365 steel and SAE-AISI 9255 steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.7365 steel and the bottom bar is SAE-AISI 9255 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
21
Fatigue Strength, MPa 320
270
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
72
Tensile Strength: Ultimate (UTS), MPa 700
680
Tensile Strength: Yield (Proof), MPa 470
390

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 510
400
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.4
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 4.4
2.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.8
1.5
Embodied Energy, MJ/kg 24
20
Embodied Water, L/kg 70
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 580
400
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
24
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 20
21

Alloy Composition

Carbon (C), % 0.12 to 0.19
0.51 to 0.59
Chromium (Cr), % 4.0 to 6.0
0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 91.2 to 94.9
96.2 to 97
Manganese (Mn), % 0.5 to 0.8
0.7 to 1.0
Molybdenum (Mo), % 0.45 to 0.65
0
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.8
1.8 to 2.2
Sulfur (S), % 0 to 0.025
0 to 0.040
Vanadium (V), % 0 to 0.050
0