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Custom 455 - ASTM F899


Custom 455 is a martensitic, age-hardenable stainless steel.  This alloy represents a significant advancement in the area of preciptiation hardening stainless steels. Custom 455 has three times the yield strength of standard 304. It lends itself well to heat treatment and fabrication, has exceptionally high yield strength, good ductility and toughness.  Custom 455 resists staining in normal atmospheres and shows no corrosion in fresh water.  

Standard Inventory Specifications 

  • UNS S45500
  • ASTM F 899

Common Trade Names

  • Custom 455 (® Carpenter Technology Corporation)
  • CarTech® Custom 455® Stainless

Common Applications of Custom 455 Stainless Steel

  • Surgical instruments for orthopedic, spinal, and dental markets
  • Drill Bits
  • Drivers
  • Distractors
  • Shafts

Inventory Size Range

  • Bar : 0.125" - 3.000"

Our medical grade Custom 455 stainless round bar is domestic melted and manufactured. We stock screw machine quality Custom 455 with tolerances of +/- .0005".  All sizes below .75" round bar are stocked to a bar tolerance of +/- .0005".  United Performance Metals is Approved ISO 13485 : 2003.

Please contact us for more details.

The technical data provided is for information only and not for design purposes.  It is not warranted or guaranteed.

Chemical composition of custom 455

 

Mn

S

Cr

Mo

Ti

Fe

MIN

__

__

11.00

__

0.80

 

MAX

0.50

0.030

12.50

0.50

1.40

Bal.

 

C

P

Si

Ni

Cu

Nb & Ta

MIN

__

__

__

7.50

1.50

0.10

MAX

0.05

0.040

0.50

9.50

2.50

0.50

​Physical properties of Custom 455

  • Density Metirc = 7.76 g/cmc
  • Density Imperial - 0.280 lb/in³

Mechanical properties of Custom 455

Properties

Metric

Imperial

Tensile Strength

1413 MPa

204900 psi

Yield Strength

1345 MPa

195100 psi

Modulus of Elasticity

200 GPa

29000 ksi

Poisson’s Ration

0.3

0.3

Elongation at Break

14%

14%

Brinell Hardness

411

411

Knoop Hardness, Rockwell C

450

450

Vickers Hardness, Rockwell C

430

430

Hardness, Rockwell C

44

44


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