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ASTM Grade HK Steel vs. AISI 317L Stainless Steel

Both ASTM grade HK steel and AISI 317L stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 32 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 HK steel and the bottom bar is AISI 317L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
44
Fatigue Strength, MPa 150
220
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
82
Tensile Strength: Ultimate (UTS), MPa 500
550
Tensile Strength: Yield (Proof), MPa 270
250

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 440
420
Maximum Temperature: Mechanical, °C 1100
1010
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1350
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 25
21
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.4
4.3
Embodied Energy, MJ/kg 63
59
Embodied Water, L/kg 200
160

Common Calculations

PREN (Pitting Resistance) 27
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
200
Resilience: Unit (Modulus of Resilience), kJ/m3 190
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 3.9
3.8
Thermal Shock Resistance, points 11
12

Alloy Composition

Carbon (C), % 0.2 to 0.6
0 to 0.030
Chromium (Cr), % 24 to 28
18 to 20
Iron (Fe), % 44.8 to 57.8
58 to 68
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
3.0 to 4.0
Nickel (Ni), % 18 to 22
11 to 15
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 2.0
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030