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EN 1.7706 Steel vs. SAE-AISI 94B17 Steel

Both EN 1.7706 steel and SAE-AISI 94B17 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.7706 steel and the bottom bar is SAE-AISI 94B17 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
130
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
25
Fatigue Strength, MPa 330
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 690
440
Tensile Strength: Yield (Proof), MPa 500
270

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 440
410
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
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
2.4
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.3
1.5
Embodied Energy, MJ/kg 32
20
Embodied Water, L/kg 57
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
96
Resilience: Unit (Modulus of Resilience), kJ/m3 670
200
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
16
Strength to Weight: Bending, points 22
16
Thermal Diffusivity, mm2/s 11
10
Thermal Shock Resistance, points 20
13

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0.15 to 0.2
0.15 to 0.2
Chromium (Cr), % 1.2 to 1.5
0.3 to 0.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 94.7 to 97.1
97.1 to 98.3
Manganese (Mn), % 0.5 to 0.9
0.75 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
0.080 to 0.15
Nickel (Ni), % 0 to 0.4
0.3 to 0.6
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0 to 0.6
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.040
Vanadium (V), % 0.2 to 0.3
0