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SAE-AISI 1141 Steel vs. EN 1.5508 Steel

Both SAE-AISI 1141 steel and EN 1.5508 steel are iron alloys. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI 1141 steel and the bottom bar is EN 1.5508 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 220
130 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 17
11 to 20
Fatigue Strength, MPa 270 to 430
210 to 320
Poisson's Ratio 0.29
0.29
Reduction in Area, % 34 to 39
62 to 74
Shear Modulus, GPa 72
73
Shear Strength, MPa 460 to 480
300 to 360
Tensile Strength: Ultimate (UTS), MPa 740 to 810
420 to 1460
Tensile Strength: Yield (Proof), MPa 400 to 700
310 to 490

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
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 51
51
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 12
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 47
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 110
44 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 430 to 1290
260 to 640
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26 to 29
15 to 52
Strength to Weight: Bending, points 23 to 25
16 to 36
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 24 to 26
12 to 43

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.37 to 0.45
0.2 to 0.25
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 97.7 to 98.2
97.9 to 99.199
Manganese (Mn), % 1.4 to 1.7
0.6 to 0.9
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0
0 to 0.3
Sulfur (S), % 0.080 to 0.13
0 to 0.025

Comparable Variants