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H900 Hardened S17400 Stainless Steel

H900 hardened S17400 stainless steel is S17400 stainless steel in the hardened (H) condition. It has the highest strength compared to the other variants of S17400 stainless steel.

The graph bars on the material properties cards below compare H900 hardened S17400 stainless steel to: wrought precipitation-hardening stainless steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Brinell Hardness

440

Elastic (Young's, Tensile) Modulus

190 GPa 28 x 106 psi

Elongation at Break

11 %

Fatigue Strength

670 MPa 98 x 103 psi

Fracture Toughness

53 MPa-m1/2 48 x 103 psi-in1/2

Poisson's Ratio

0.28

Reduction in Area

40 %

Rockwell C Hardness

42

Shear Modulus

75 GPa 11 x 106 psi

Shear Strength

830 MPa 120 x 103 psi

Tensile Strength: Ultimate (UTS)

1390 MPa 200 x 103 psi

Tensile Strength: Yield (Proof)

1250 MPa 180 x 103 psi

Thermal Properties

Latent Heat of Fusion

280 J/g

Maximum Temperature: Corrosion

450 °C 840 °F

Maximum Temperature: Mechanical

850 °C 1570 °F

Melting Completion (Liquidus)

1440 °C 2620 °F

Melting Onset (Solidus)

1400 °C 2550 °F

Specific Heat Capacity

480 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

17 W/m-K 9.7 BTU/h-ft-°F

Thermal Expansion

11 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

2.3 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.6 % IACS

Otherwise Unclassified Properties

Base Metal Price

14 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

2.7 kg CO2/kg material

Embodied Energy

39 MJ/kg 17 x 103 BTU/lb

Embodied Water

130 L/kg 16 gal/lb

Common Calculations

PREN (Pitting Resistance)

16

Resilience: Ultimate (Unit Rupture Work)

140 MJ/m3

Resilience: Unit (Modulus of Resilience)

4060 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

49 points

Strength to Weight: Bending

35 points

Thermal Diffusivity

4.5 mm2/s

Thermal Shock Resistance

46 points

Alloy Composition

Iron (Fe)Fe 70.4 to 78.9
Chromium (Cr)Cr 15 to 17
Nickel (Ni)Ni 3.0 to 5.0
Copper (Cu)Cu 3.0 to 5.0
Manganese (Mn)Mn 0 to 1.0
Silicon (Si)Si 0 to 1.0
Niobium (Nb)Nb 0.15 to 0.45
Carbon (C)C 0 to 0.070
Phosphorus (P)P 0 to 0.040
Sulfur (S)S 0 to 0.030

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Further Reading

ASTM A564: Standard Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes

Sintering of Advanced Materials: Fundamentals and Processes, Zhigang Zak Fang (editor), 2010

ASTM A276: Standard Specification for Stainless Steel Bars and Shapes

Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005

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

ASM Specialty Handbook: Stainless Steels, J. R. Davis (editor), 1994

Advances in Stainless Steels, Baldev Raj et al. (editors), 2010