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EN 1.4935 Stainless Steel vs. EN 1.4521 Stainless Steel

Both EN 1.4935 stainless steel and EN 1.4521 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4935 stainless steel and the bottom bar is EN 1.4521 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 16 to 18
23
Fatigue Strength, MPa 350 to 400
230
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Shear Strength, MPa 480 to 540
330
Tensile Strength: Ultimate (UTS), MPa 780 to 880
520
Tensile Strength: Yield (Proof), MPa 570 to 670
340

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 380
500
Maximum Temperature: Mechanical, °C 740
930
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 24
23
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.9
2.8
Embodied Energy, MJ/kg 42
39
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 16
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
100
Resilience: Unit (Modulus of Resilience), kJ/m3 830 to 1160
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 31
19
Strength to Weight: Bending, points 24 to 26
19
Thermal Diffusivity, mm2/s 6.5
6.2
Thermal Shock Resistance, points 27 to 30
18

Alloy Composition

Carbon (C), % 0.17 to 0.24
0 to 0.025
Chromium (Cr), % 11 to 12.5
17 to 20
Iron (Fe), % 83 to 86.7
74.6 to 81.1
Manganese (Mn), % 0.3 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.8 to 1.2
1.8 to 2.5
Nickel (Ni), % 0.3 to 0.8
0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.1 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.8
Tungsten (W), % 0.4 to 0.6
0
Vanadium (V), % 0.2 to 0.35
0