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EN 1.6579 Steel vs. AISI 334 Stainless Steel

Both EN 1.6579 steel and AISI 334 stainless steel are iron alloys. They have 63% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.6579 steel and the bottom bar is AISI 334 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260 to 290
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 14
34
Fatigue Strength, MPa 380 to 570
150
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 850 to 980
540
Tensile Strength: Yield (Proof), MPa 600 to 910
190

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
1000
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
22
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.7
4.1
Embodied Energy, MJ/kg 22
59
Embodied Water, L/kg 56
170

Common Calculations

PREN (Pitting Resistance) 2.4
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 120
140
Resilience: Unit (Modulus of Resilience), kJ/m3 950 to 2210
96
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 30 to 35
19
Strength to Weight: Bending, points 25 to 28
19
Thermal Shock Resistance, points 25 to 29
12

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.6
Carbon (C), % 0.32 to 0.38
0 to 0.080
Chromium (Cr), % 1.4 to 1.7
18 to 20
Iron (Fe), % 94.2 to 96.1
55.7 to 62.7
Manganese (Mn), % 0.6 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.15 to 0.35
0
Nickel (Ni), % 1.4 to 1.7
19 to 21
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6