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EN 1.4618 Stainless Steel vs. ASTM Grade HP Steel

Both EN 1.4618 stainless steel and ASTM grade HP steel are iron alloys. They have 60% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
5.1
Fatigue Strength, MPa 240 to 250
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 680 to 700
490
Tensile Strength: Yield (Proof), MPa 250 to 260
260

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1400
1370
Melting Onset (Solidus), °C 1360
1330
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 13
34
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.7
5.8
Embodied Energy, MJ/kg 39
82
Embodied Water, L/kg 150
220

Common Calculations

PREN (Pitting Resistance) 19
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
21
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 25
17
Strength to Weight: Bending, points 22 to 23
17
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 15 to 16
11

Alloy Composition

Carbon (C), % 0 to 0.1
0.35 to 0.75
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
29.2 to 42.7
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
33 to 37
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 2.5
Sulfur (S), % 0 to 0.010
0 to 0.040