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ASTM Grade HD Steel vs. S17700 Stainless Steel

Both ASTM grade HD steel and S17700 stainless steel are iron alloys. They have 88% 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 ASTM grade HD steel and the bottom bar is S17700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 9.1
1.0 to 23
Fatigue Strength, MPa 140
290 to 560
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
76
Tensile Strength: Ultimate (UTS), MPa 590
1180 to 1650
Tensile Strength: Yield (Proof), MPa 270
430 to 1210

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 460
410
Maximum Temperature: Mechanical, °C 1100
890
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 17
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.1
2.8
Embodied Energy, MJ/kg 45
40
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 29
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
15 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 180
460 to 3750
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 21
42 to 59
Strength to Weight: Bending, points 20
32 to 40
Thermal Diffusivity, mm2/s 4.3
4.1
Thermal Shock Resistance, points 19
39 to 54

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.5
Carbon (C), % 0 to 0.5
0 to 0.090
Chromium (Cr), % 26 to 30
16 to 18
Iron (Fe), % 58.4 to 70
70.5 to 76.8
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 4.0 to 7.0
6.5 to 7.8
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030