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ASTM Grade HH Steel vs. EN 1.4618 Stainless Steel

Both ASTM grade HH steel and EN 1.4618 stainless steel are iron alloys. They have 83% 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 ASTM grade HH steel and the bottom bar is EN 1.4618 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
51
Fatigue Strength, MPa 150
240 to 250
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 580
680 to 700
Tensile Strength: Yield (Proof), MPa 270
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1360
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 20
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.7
2.7
Embodied Energy, MJ/kg 53
39
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 27
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 53
270 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 190
160 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
24 to 25
Strength to Weight: Bending, points 20
22 to 23
Thermal Diffusivity, mm2/s 3.8
4.0
Thermal Shock Resistance, points 12
15 to 16

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.1
Chromium (Cr), % 24 to 28
16.5 to 18.5
Copper (Cu), % 0
1.0 to 2.5
Iron (Fe), % 52.9 to 64.8
62.7 to 72.5
Manganese (Mn), % 0 to 2.0
5.5 to 9.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 11 to 14
4.5 to 5.5
Nitrogen (N), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.040
0 to 0.070
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.010