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EN 1.8888 Steel vs. EN 1.8881 Steel

Both EN 1.8888 steel and EN 1.8881 steel are iron alloys. Both are furnished in the quenched and tempered condition. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.8888 steel and the bottom bar is EN 1.8881 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
16
Fatigue Strength, MPa 470
460
Impact Strength: V-Notched Charpy, J 110
90
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 510
510
Tensile Strength: Ultimate (UTS), MPa 830
830
Tensile Strength: Yield (Proof), MPa 720
710

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Maximum Temperature: Mechanical, °C 420
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 40
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
3.7
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.9
1.9
Embodied Energy, MJ/kg 26
26
Embodied Water, L/kg 54
54

Common Calculations

PREN (Pitting Resistance) 2.0
2.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1370
1320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
29
Strength to Weight: Bending, points 25
25
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 24
24

Alloy Composition

Boron (B), % 0 to 0.0050
0 to 0.0050
Carbon (C), % 0 to 0.2
0 to 0.2
Chromium (Cr), % 0 to 1.5
0 to 1.5
Copper (Cu), % 0 to 0.3
0 to 0.3
Iron (Fe), % 91.9 to 100
91.9 to 100
Manganese (Mn), % 0 to 1.7
0 to 1.7
Molybdenum (Mo), % 0 to 0.7
0 to 0.7
Nickel (Ni), % 0 to 2.5
0 to 2.5
Niobium (Nb), % 0 to 0.060
0 to 0.060
Nitrogen (N), % 0 to 0.015
0 to 0.015
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0 to 0.8
0 to 0.8
Sulfur (S), % 0 to 0.0050
0 to 0.0080
Titanium (Ti), % 0 to 0.050
0 to 0.050
Vanadium (V), % 0 to 0.12
0 to 0.12
Zirconium (Zr), % 0 to 0.15
0 to 0.15