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EN 1.6958 Steel vs. SAE-AISI 1025 Steel

Both EN 1.6958 steel and SAE-AISI 1025 steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 32 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 1.6958 steel and the bottom bar is SAE-AISI 1025 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 340
130 to 140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
17 to 28
Fatigue Strength, MPa 700
190 to 280
Poisson's Ratio 0.29
0.29
Reduction in Area, % 56
45 to 57
Shear Modulus, GPa 73
73
Shear Strength, MPa 700
290 to 310
Tensile Strength: Ultimate (UTS), MPa 1140
450 to 500
Tensile Strength: Yield (Proof), MPa 1070
250 to 420

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 450
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 47
52
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
1.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 27
18
Embodied Water, L/kg 60
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
80 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 3050
170 to 470
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 40
16 to 18
Strength to Weight: Bending, points 31
17 to 18
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 39
14 to 16

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0
Carbon (C), % 0.25 to 0.3
0.22 to 0.28
Chromium (Cr), % 1.2 to 1.7
0
Iron (Fe), % 92.6 to 94.5
99.03 to 99.48
Manganese (Mn), % 0.2 to 0.5
0.3 to 0.6
Molybdenum (Mo), % 0.35 to 0.55
0
Nickel (Ni), % 3.3 to 3.8
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0.15 to 0.3
0
Sulfur (S), % 0 to 0.015
0 to 0.050
Vanadium (V), % 0 to 0.12
0