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AISI 440C (S44004) Stainless Steel

Martensitic Stainless Steels

annealed
OverviewChemical CompositionMechanical PropertiesPhysical PropertiesOther Properties

Property Overview

Density7.7g/cm³
Elastic Modulus200GPa
Tensile Strength710MPa
Yield Strength450MPa
Brinell HardnessUnknown
Maximum Service Temperature870°C
Weight Calculator

Chemical Composition

C
1.0 to 1.2%
CR
16 to 18%
MO
0 to 0.75%
MN
0 to 1.0%
SI
0 to 1.0%
P
0 to 0.040%
S
0 to 0.015%
FE
78 to 83.1%

Mechanical

Elastic (Young's, Tensile) Modulus
200 GPa
Elongation at Break
14 %
Fatigue Strength
260 MPa
Poisson's Ratio
0.28
Shear Modulus
76 GPa
Shear Strength
430 MPa
Tensile Strength: Ultimate (UTS)
710 MPa
Tensile Strength: Yield (Proof)
450 MPa

Physical

Density
7.7 g/cm 3

Thermal

Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
390 °C
Maximum Temperature: Mechanical
870 °C
Melting Completion (Liquidus)
1480 °C
Melting Onset (Solidus)
1370 °C
Specific Heat Capacity
480 J/kg-K
Thermal Conductivity
22 W/m-K
Thermal Diffusivity
6.0 mm 2 /s
Thermal Expansion
10 µm/m-K
Thermal Shock Resistance
26 points

Electrical

Electrical Conductivity: Equal Volume
2.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.8 % IACS

Calculated

PREN (Pitting Resistance)
18
Resilience: Ultimate (Unit Rupture Work)
88 MJ/m 3
Resilience: Unit (Modulus of Resilience)
520 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
26 points
Strength to Weight: Bending
23 points

Environmental

Base Metal Price
9.0 % relative
Embodied Carbon
2.2 kg CO 2 /kg material
Embodied Energy
31 MJ/kg
Embodied Energy
31 MJ/kg 13 x 10 3 BTU/lb
Embodied Water
120 L/kg
Embodied Water
120 L/kg 14 gal/lb
Registered Designations & Aliases
440CAISI 440CAISI 440C (S44004) Stainless SteelS44004
Standards

ASTM A276 ASTM A276: Standard Specification for Stainless Steel Bars and Shapes

ASTM A493 ASTM A493: Standard Specification for Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging

ASTM A493 ASTM A493: Standard Specification for Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging ASTM A276: Standard Specification for Stainless Steel Bars and Shapes Creep-Resistant Steels, Fujio Abe et al. (editors), 2008 Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005 Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993 Corrosion of Stainless Steels, A. John Sedriks, 1996

ASTM A959 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels