Custom® 455 AMS 5617

Custom 455 is a martensitic age-hardenable stainless steel that is relatively soft and formable in the annealed condition. A single-step aging treatment develops exceptionally high yield strength with good ductility and toughness. 

Stock sizes: 0.2500” to 2.750” diameter

Common Specifications:

  • AMS 5617 GRADE 1
  • ASTM-F899
  • ASTM-A564
  • BOEING MDM6-1093

Common Applications:

  • Landing gear components
  • Slat components
  • Pneumatic cylinders, braces and struts
  • Engine valves springs
  • Endoscopic instruments
  • Medical scrapers, cutters, suture needles

Melting Method: VIM-VAR

Heat treatment: solution heat treated to 1800 degrees F, held for 60 minutes, then quenched and cooled to -100 degrees F and held for at least 8 hours.

Macrostructure Limits:

Condition Hardness HB
H 950 415
H 1000 388
Rockwell Industries Custom-455-AMS-5617

Composition

Element Grade 1 Min Grade 1 Max Grade 2 Min Grade 2 Max
Carbon 0.03 0.010
Manganese 0.50 0.50
Silicon 0.50 0.20
Phosphorus 0.015 0.010
Sulfur 0.015 0.010
Chromium 11.00 12.50 11.00 12.50
Nickel 7.50 9.50 7.50 9.50
Titanium 0.90 1.40 1.00 1.35
Copper 1.50 2.50 1.50 2.50
Molybdenum 0.50 0.50
Columbian 0.50 0.50
Nitrogen 0.015 0.010

Minimum Tensile Properties, inch/pound units

Condition Nominal Diameter or Least Distance Between Parallel Sides

Inches
Tensile Strength

psi
Yield Strength at 0.2% Offset

psi
Elongation in 4D

%
Reduction of Area

%
H950 Up to 4.000, incl
Over 4.000 to 6.000, incl
225000
220000
210000
205000
10
10
40
40
H1000 Up to 8.000, incl 200000 185000 10 40