Skip to main content

Stainless Steel Grade 455 | UNS# S45500

Stainless Steel Grade 455: forms, specifications and uses

Stainless Steel Grade 455 (UNS S45500): Stainless Steel Grade Custom 455 (UNS S45500) is an advanced martensitic alloy included in the precipitation hardening stainless steels.

Titanium Industries offers Stainless Steel Grade Custom 455 Round Bar from its locations.

Stainless Steel Grade 455 is supplied to specifications including AMS 5617, ASTM A564 and ASTM F899.

Typical uses of Stainless Steel Grade 455 include heat exchangers, surface condensers, conveyors and food processing.

For Stainless Steel Grade 455, request a quote online or contact your nearest Titanium Industries location. Alloy data on this page is for reference only, not for design.

Round bar, one of the Stainless Steel Grade 455 product forms Titanium Industries stocks

Weight Calculator

Stainless Steel Grade Custom 455 | UNS# S45500 is an advanced martensitic alloy included in the precipitation hardening stainless steels. Combining corrosion resistance, hardenability, ease of fabrication, and yield strength that is 3 times the strength of grade 304. Custom 455 is known for being soft and formable in the annealed condition, but single-step aging treatments result in an exceptionally high yield strength that also demonstrates good ductility and toughness. Applications generally include heat exchangers, conveyors, food processing and similar industries.

Stainless Steel Grade Custom 455 Specifications:

Stainless Steel Grade Custom 455 product forms offered at all Titanium Industries' locations:

  • Stainless Steel Grade Custom 455 Round Bar
Quote online

Stainless Steel Custom 455 Applications:

  • Heat Exchangers
  • Surface Condensers
  • Conveyors
  • Food Processing

DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.

Stainless Steel Grade 455 | UNS# S45500 — Table 1
Chemical Composition
Fe 73.0% Cr 11.8% Ni 8.50% Nb 2.0% Cu 2.0%
Ti 1.10% Mn 0.50% Mo 0.50% Si 0.50% C 0.50%
P 0.040% S 0.030%
Stainless Steel Grade 455 | UNS# S45500 — Table 2
PHYSICAL PROPERTIES
Density Electrical conductivity (% IACS) Thermal conductivity (BTU-in/hr-ft²-°F) Specific heat capacity Thermal expansion (1/°F) Melting Point (°F)
0.282 1.9 125 0.11 0.00000590 -
Stainless Steel Grade 455 | UNS# S45500 — Table 3
Mechanical Properties
Property Minimum Maximum
Yield Strength Range (Rp0.2 Offset) (ksi) 115 195
Tensile Strength Range (Rm) (ksi) 145 250
Elongation (AL=5 x Ø) 10.0% 14.0%
Brinell Hardness (H) 297 472
Modulus of Elasticity (ksi) (E): 29000
Machineability General Index: 28%

Stainless Steel Grade 455: questions and answers

What is Stainless Steel Grade 455?

Stainless Steel Grade Custom 455 (UNS S45500) is an advanced martensitic alloy included in the precipitation hardening stainless steels.

Which Stainless Steel Grade 455 product forms does Titanium Industries stock?

Stainless Steel Grade Custom 455 Round Bar.

Which specifications does Stainless Steel Grade 455 meet?

AMS 5617, ASTM A564 and ASTM F899.

What is Stainless Steel Grade 455 used for?

Heat exchangers, surface condensers, conveyors and food processing.