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EN 1.4821 Stainless Steel vs. EN 1.7706 Steel

Both EN 1.4821 stainless steel and EN 1.7706 steel are iron alloys. They have 70% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4821 stainless steel and the bottom bar is EN 1.7706 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 18
17
Fatigue Strength, MPa 280
330
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 730
690
Tensile Strength: Yield (Proof), MPa 450
500

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Maximum Temperature: Mechanical, °C 1100
440
Melting Completion (Liquidus), °C 1410
1470
Melting Onset (Solidus), °C 1370
1430
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 17
40
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 15
3.7
Density, g/cm3 7.6
7.9
Embodied Carbon, kg CO2/kg material 2.9
2.3
Embodied Energy, MJ/kg 41
32
Embodied Water, L/kg 160
57

Common Calculations

PREN (Pitting Resistance) 26
4.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 500
670
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 26
24
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 4.6
11
Thermal Shock Resistance, points 21
20

Alloy Composition

Carbon (C), % 0.1 to 0.2
0.15 to 0.2
Chromium (Cr), % 24.5 to 26.5
1.2 to 1.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 64.2 to 71.1
94.7 to 97.1
Manganese (Mn), % 0 to 2.0
0.5 to 0.9
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 3.5 to 5.5
0 to 0.4
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0.8 to 1.5
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.015
Vanadium (V), % 0
0.2 to 0.3