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EN 1.7703 Steel vs. ASTM Grade HH Steel

Both EN 1.7703 steel and ASTM grade HH steel are iron alloys. They have 62% of their average alloy composition in common. There are 31 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 1.7703 steel and the bottom bar is ASTM grade HH steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
11
Fatigue Strength, MPa 320 to 340
150
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 74
79
Tensile Strength: Ultimate (UTS), MPa 670 to 690
580
Tensile Strength: Yield (Proof), MPa 460 to 500
270

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 460
1100
Melting Completion (Liquidus), °C 1470
1400
Melting Onset (Solidus), °C 1430
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
14
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
20
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 2.5
3.7
Embodied Energy, MJ/kg 35
53
Embodied Water, L/kg 61
180

Common Calculations

PREN (Pitting Resistance) 5.6
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
53
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
21
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 11
3.8
Thermal Shock Resistance, points 19 to 20
12

Alloy Composition

Carbon (C), % 0.11 to 0.15
0.2 to 0.5
Chromium (Cr), % 2.0 to 2.5
24 to 28
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 94.6 to 96.4
52.9 to 64.8
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
0 to 0.5
Nickel (Ni), % 0 to 0.25
11 to 14
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 2.0
Sulfur (S), % 0 to 0.0050
0 to 0.040
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.25 to 0.35
0