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EN 1.4835 Stainless Steel vs. EN 1.4988 Stainless Steel

Both EN 1.4835 stainless steel and EN 1.4988 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4835 stainless steel and the bottom bar is EN 1.4988 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 43
34
Fatigue Strength, MPa 310
230
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 520
430
Tensile Strength: Ultimate (UTS), MPa 750
640
Tensile Strength: Yield (Proof), MPa 350
290

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Corrosion, °C 430
520
Maximum Temperature: Mechanical, °C 1150
920
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 17
23
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.3
6.0
Embodied Energy, MJ/kg 47
89
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 24
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
180
Resilience: Unit (Modulus of Resilience), kJ/m3 310
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
23
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0.050 to 0.12
0.040 to 0.1
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 20 to 22
15.5 to 17.5
Iron (Fe), % 62 to 68.4
62.1 to 69.5
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0
1.1 to 1.5
Nickel (Ni), % 10 to 12
12.5 to 14.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0.12 to 0.2
0.060 to 0.14
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 1.4 to 2.5
0.3 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.015
Vanadium (V), % 0
0.6 to 0.85