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EN 1.4988 Stainless Steel vs. ASTM Grade HT Steel

Both EN 1.4988 stainless steel and ASTM grade HT steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4988 stainless steel and the bottom bar is ASTM grade HT steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
4.6
Fatigue Strength, MPa 230
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 640
500
Tensile Strength: Yield (Proof), MPa 290
270

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 520
400
Maximum Temperature: Mechanical, °C 920
1010
Melting Completion (Liquidus), °C 1450
1390
Melting Onset (Solidus), °C 1400
1340
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 23
31
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 6.0
5.4
Embodied Energy, MJ/kg 89
76
Embodied Water, L/kg 150
190

Common Calculations

PREN (Pitting Resistance) 22
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
19
Resilience: Unit (Modulus of Resilience), kJ/m3 210
180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23
18
Strength to Weight: Bending, points 21
18
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 14
12

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.35 to 0.75
Chromium (Cr), % 15.5 to 17.5
15 to 19
Iron (Fe), % 62.1 to 69.5
38.2 to 51.7
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 1.1 to 1.5
0 to 0.5
Nickel (Ni), % 12.5 to 14.5
33 to 37
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.3 to 0.6
0 to 2.5
Sulfur (S), % 0 to 0.015
0 to 0.040
Vanadium (V), % 0.6 to 0.85
0