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EN 1.8902 Steel vs. EN 1.8959 Steel

Both EN 1.8902 steel and EN 1.8959 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.8902 steel and the bottom bar is EN 1.8959 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
16
Fatigue Strength, MPa 290
220
Impact Strength: V-Notched Charpy, J 58
30
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 380
350
Tensile Strength: Ultimate (UTS), MPa 600
570
Tensile Strength: Yield (Proof), MPa 420
340

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
420
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 44
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
2.7
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.6
Embodied Energy, MJ/kg 24
21
Embodied Water, L/kg 51
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
78
Resilience: Unit (Modulus of Resilience), kJ/m3 470
300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
20
Strength to Weight: Bending, points 20
19
Thermal Diffusivity, mm2/s 12
10
Thermal Shock Resistance, points 18
17

Alloy Composition

Aluminum (Al), % 0 to 0.015
0
Carbon (C), % 0 to 0.22
0 to 0.19
Chromium (Cr), % 0 to 0.35
0.35 to 0.85
Copper (Cu), % 0 to 0.6
0.2 to 0.6
Iron (Fe), % 95 to 99.05
94.9 to 99
Manganese (Mn), % 1.0 to 1.8
0.45 to 1.6
Molybdenum (Mo), % 0 to 0.13
0 to 0.35
Nickel (Ni), % 0 to 0.85
0 to 0.7
Niobium (Nb), % 0 to 0.060
0
Nitrogen (N), % 0 to 0.027
0 to 0.010
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.65
0 to 0.55
Sulfur (S), % 0 to 0.030
0 to 0.040
Titanium (Ti), % 0 to 0.060
0
Vanadium (V), % 0 to 0.22
0
Zirconium (Zr), % 0
0 to 0.17