Custom 450

Do you need custom fasteners created with Custom 450? Since our inception, Elgin Fastener Group has met every challenge of providing Quality, Timely, Cost-effective solutions for specialty fastener applications. Every product is built to your specifications, using your prints if necessary.

Below are the technical specifications of the Custom 450 Bar Stock we have available to meet your needs.

Carpenter Custom 450® Stainless Steel, Annealed

Subcategory: Metal; Stainless Steel; T 400 Series Stainless Steel Key Words: UNS S45000; Carpenter Technology Corporation, Carpenter Steel Division; Cartech

Component Wt. %
C Max 0.05
Cr 14 – 16
Cu 1.25 – 1.75
Fe 75
Mn Max 1
Mo 0.5 – 1
Ni 5 – 7
P Max 0.03
S Max 0.03
Si Max 1

Material Notes: Iron content calculated as remainder; minimum niobium (columbium) content 8 x C. Data provided by Carpenter Technology Corporation.

Custom 450® stainless is a martensitic age-hardenable stainless steel which exhibits very good corrosion resistance (similar to that of Stainless Type 304) with moderate strength (similar to that of Stainless Type 410). the alloy has a yield strength somewhat greater than 100 ksi (689 MPa) in the annealed condition, but is easily fabricated. A single-step aging treatment develops higher strength with good ductility and toughness. This stainless can be machined, hot-worked, and cold-formed in the same manner as other martensitic age-hardenable stainless steels. A particular advantage is ease of welding and brazing. Custom 450 stainless is generally supplied in the annealed condition, requiring no heat treatment by the user for many applications. Because it has corrosion resistance like Type 304 stainless but three times the yield strength, it has been used in applications where Type 304 was not strong enough. On the other hand, it has also replaced Type 410 stainless directly on a strength basis where Type 410 had insufficient corrosion resistance. Mechanical properties will depend on the aging temperature selected.

Custom 450® is a registered trademark of Carpenter Technology Corporation.

Physical Properties Metric English Comments
Density 7.75 g/cc 0.28 lb/in³
Mechanical Properties
Hardness, Brinell 278 278 Estimated from Rockwell C for 3000 kg load, 10 mm ball Brinell measurement.
Hardness, Knoop 301 301 Estimated from Rockwell C
Hardness, Rockwell C 28 28
Hardness, Vickers 292 292 Estimated from Rockwell C
Tensile Strength, Ultimate 979 MPa 142000 psi
Tensile Strength, Yield 814 MPa 118000 psi 0.2% Offset
Elongation at Break 13 % 13 % In 4D
Reduction of Area 50 % 50 %
Modulus of Elasticity 200 GPa 29000 ksi
Notched Tensile Strength 1524 MPa 221000 psi Kt = 10
Poisson’s Ratio 0.29 0.29
Charpy Impact 133 J 98.1 ft-lb V-notch
Fatigue Strength 517 MPa 75000 psi R.R. Moore Test, Smooth Rotating Beam, 1E+7 Cycles
Shear Modulus 77.5 GPa 11200 ksi Calculated
Electrical Properties
Electrical Resistivity 9.92e-005 ohm-cm 9.92e-005 ohm-cm
Thermal Properties
CTE, linear 20°C 10.58 µm/m-°C 5.88 µin/in-°F 24-93ºC
CTE, linear 250°C 10.44 µm/m-°C 5.8 µin/in-°F 24-260ºC
CTE, linear 500°C 11.11 µm/m-°C 6.17 µin/in-°F 24-593ºC
Heat Capacity 0.477 J/g-°C 0.114 BTU/lb-°F
Thermal Conductivity 15 W/m-K 104 BTU-in/hr-ft²-°F H900 Condition; at Room Temp. 18.2 W/m-K at 200ºC. 24.4 W/m-K at 500ºC.