MakeItFrom.com
Menu (ESC)

EN 1.7720 Steel vs. EN 1.8880 Steel

Both EN 1.7720 steel and EN 1.8880 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have a very high 98% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.7720 steel and the bottom bar is EN 1.8880 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
16
Fatigue Strength, MPa 230
470
Impact Strength: V-Notched Charpy, J 30
68
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 590
830
Tensile Strength: Yield (Proof), MPa 340
720

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 410
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 40
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
3.7
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.9
Embodied Energy, MJ/kg 30
26
Embodied Water, L/kg 51
54

Common Calculations

PREN (Pitting Resistance) 2.1
2.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 97
130
Resilience: Unit (Modulus of Resilience), kJ/m3 300
1370
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
29
Strength to Weight: Bending, points 20
25
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 17
24

Alloy Composition

Boron (B), % 0
0 to 0.0050
Carbon (C), % 0.1 to 0.15
0 to 0.2
Chromium (Cr), % 0.3 to 0.5
0 to 1.5
Copper (Cu), % 0 to 0.3
0 to 0.3
Iron (Fe), % 96.6 to 98.6
91.9 to 100
Manganese (Mn), % 0.4 to 0.7
0 to 1.7
Molybdenum (Mo), % 0.4 to 0.6
0 to 0.7
Nickel (Ni), % 0 to 0.4
0 to 2.5
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.45
0 to 0.8
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0.22 to 0.3
0 to 0.12
Zirconium (Zr), % 0
0 to 0.15