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EN 1.4618 Stainless Steel vs. ASTM Grade HK Steel

Both EN 1.4618 stainless steel and ASTM grade HK steel are iron alloys. They have 75% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4618 stainless steel and the bottom bar is ASTM grade HK steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
11
Fatigue Strength, MPa 240 to 250
150
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 680 to 700
500
Tensile Strength: Yield (Proof), MPa 250 to 260
270

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1360
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
25
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.7
4.4
Embodied Energy, MJ/kg 39
63
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 19
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
48
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 25
18
Strength to Weight: Bending, points 22 to 23
18
Thermal Diffusivity, mm2/s 4.0
3.9
Thermal Shock Resistance, points 15 to 16
11

Alloy Composition

Carbon (C), % 0 to 0.1
0.2 to 0.6
Chromium (Cr), % 16.5 to 18.5
24 to 28
Copper (Cu), % 1.0 to 2.5
0
Iron (Fe), % 62.7 to 72.5
44.8 to 57.8
Manganese (Mn), % 5.5 to 9.5
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 4.5 to 5.5
18 to 22
Nitrogen (N), % 0 to 0.15
0
Phosphorus (P), % 0 to 0.070
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.010
0 to 0.040