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EN 1.7380 Steel vs. EN 1.8881 Steel

Both EN 1.7380 steel and EN 1.8881 steel are iron alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.7380 steel and the bottom bar is EN 1.8881 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 170
250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19 to 20
16
Fatigue Strength, MPa 200 to 230
460
Impact Strength: V-Notched Charpy, J 31 to 35
90
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 330 to 350
510
Tensile Strength: Ultimate (UTS), MPa 540 to 550
830
Tensile Strength: Yield (Proof), MPa 290 to 330
710

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Maximum Temperature: Mechanical, °C 460
420
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
3.7
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.9
Embodied Energy, MJ/kg 23
26
Embodied Water, L/kg 59
54

Common Calculations

PREN (Pitting Resistance) 5.6
2.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 98
120
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 280
1320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19 to 20
29
Strength to Weight: Bending, points 19
25
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 15 to 16
24

Alloy Composition

Boron (B), % 0
0 to 0.0050
Carbon (C), % 0.080 to 0.14
0 to 0.2
Chromium (Cr), % 2.0 to 2.5
0 to 1.5
Copper (Cu), % 0 to 0.3
0 to 0.3
Iron (Fe), % 94.6 to 96.6
91.9 to 100
Manganese (Mn), % 0.4 to 0.8
0 to 1.7
Molybdenum (Mo), % 0.9 to 1.1
0 to 0.7
Nickel (Ni), % 0
0 to 2.5
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0 to 0.012
0 to 0.015
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.8
Sulfur (S), % 0 to 0.010
0 to 0.0080
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.12
Zirconium (Zr), % 0
0 to 0.15