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Stainless Steel, Custom 455

This grade is a registered trademark of Carpenter Technology Corporation. This alloy is a Martensitic Age Hardenable Stainless with good resistance to atmospheric environments. This alloy is extremely stable during heat-treating so it can be machined to close tolerance prior to aging. This grade is used in critical Aerospace and Defence applications. This can also be used in the Electrical and Turbine industries.

Chemical Composition (Weight %)
  C P Si Ni Cu Cb+Ta Mn S Cr Mo Ti
Min

  7.50 1.50 0.10

11.00
0.80
Max 0.05 0.04 0.50 9.50 2.50 0.50 0.50 0.03 12.50 0.50 1.40

Typical Mechanical Properties (Min)
Condition Tensile Strength, MPa Yield Strength 0.2%, MPa  Elongation %  Reduction of Area %  Hardness HRC
A 1000 793 14 60 31
H900 1724 1689 10 45 49
H950 1620 1551 12 50 48
H1000 1448 1379 14 55 45
H1050 1310 1207 15 55 40
 

Related Specifications and Conditions

UNS S45500, AMS5617, AMS5860, ASTM A564, ASTM A693

Available Forms 

Round bar, flat bar, billet, strip, wire, forgings
 
Chemical Composition (Weight %)
  Min Max
C   0.05
P   0.04
Si   0.50
Ni 7.50 9.50
Cu 1.50 2.50
Cb+Ta 0.10 0.50
Mn   0.50
S 0.03
Cr 11.00 12.50
Mo   0.50
Ti 0.80 1.40

Typical Mechanical Properties (Min)
Condition A
Tensile Strength, MPa 1000
Yield Strength 0.2%, MPa 793
 Elongation % 14
 Reduction of Area % 60
 Hardness HRC 31
H900
Tensile Strength, MPa 1724
Yield Strength 0.2%, MPa 1689
 Elongation % 10
 Reduction of Area % 45
 Hardness HRC 49
H950
Tensile Strength, MPa 1620
Yield Strength 0.2%, MPa 1551
 Elongation % 12
 Reduction of Area % 50
 Hardness HRC 48
H1000
Tensile Strength, MPa 1448
Yield Strength 0.2%, MPa 1379
 Elongation % 14
 Reduction of Area % 55
 Hardness HRC 45
H1050
Tensile Strength, MPa 1310
Yield Strength 0.2%, MPa 1207
 Elongation % 15
 Reduction of Area % 55
 Hardness HRC 40
 

Related Specifications and Conditions

UNS S45500, AMS5617, AMS5860, ASTM A564, ASTM A693

Available Forms 

Round bar, flat bar, billet, strip, wire, forgings