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EN 1.7336 Steel vs. EN 1.8503 Steel

Both EN 1.7336 steel and EN 1.8503 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.7336 steel and the bottom bar is EN 1.8503 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
300
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
16
Fatigue Strength, MPa 240 to 310
600
Impact Strength: V-Notched Charpy, J 39 to 46
39
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 370
610
Tensile Strength: Ultimate (UTS), MPa 590
1000
Tensile Strength: Yield (Proof), MPa 340 to 440
910

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 430
440
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.1
3.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
2.3
Embodied Energy, MJ/kg 21
33
Embodied Water, L/kg 53
57

Common Calculations

PREN (Pitting Resistance) 3.2
3.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
150
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 510
2200
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
35
Strength to Weight: Bending, points 20
28
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 17
29

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0 to 0.17
0.16 to 0.24
Chromium (Cr), % 1.0 to 1.5
1.2 to 1.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 95.6 to 97.7
95.8 to 97.5
Manganese (Mn), % 0.4 to 0.65
0.4 to 0.8
Molybdenum (Mo), % 0.45 to 0.65
0.65 to 0.8
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0.5 to 0.8
0 to 0.4
Sulfur (S), % 0 to 0.0050
0 to 0.035
Vanadium (V), % 0
0.25 to 0.35