Stainless Steel 455/ Custom 455 (AMS 5617)

Technical Data Sheet


Chemical Composition Limits
Weight% C P Si Ni Cu Cb + Ta Mn S Cr Mo Ti Fe
Alloy 455 0.05 max 0.040 max 0.50 max 7.5-9.5 1.5-2.5 0.10-0.50 0.50 max 0.030 max 11.0-12.5 0.50 max 0.80-1.4 Bal

Alloy 455 is a martensitic age hardenable stainless steel, which has properties of high strength and good corrosion resistance. Alloy 455 is relatively soft and formable in the annealed condition, however through a single-stage aging treatment alloy 455 develops an exceptionally high yield strength with good ductility and toughness

Typical Mechanical Properties


Material Condition
0.2 % Yield Strength (Mpa) Ultimate Tensile Strength (Mpa) Notch Tensile Strength % Elongation in 4D % Reduction of Area Rockwell C Hardness Charpy V Notch Impact Strength (ft-lbs)
Alloy 455 Bar 1" Section
Custom 455®
A 793 1000 1585 14 60 31 70
Alloy 455 Bar 1" Section
Custom 455®
H900 1689 1724 1792 10 45 49 9
Alloy 455 Bar 1" Section
Custom 455®
H950 1551 1620 2068 12 50 48 14
Alloy 455 Bar 1" Section
Custom 455®
H1000 1379 1448 2000 14 55 45 20
Alloy 455 Bar 1" Section
Custom 455®
H1050 1207 1310 1793 15 55 40 35

Alloy 455 is available as Bar (Round, Flat, Square, Shapes), Sheet, Plate, Wire, Strip, Billet, Forgings. For all stock availability contact Sales.

AMS 5578 Welded tube
AMS 5617 Gr 1 Bar
AMS 5617 Gr 2 Bar
AMS 5860 Sheet / strip / plate
ASTM A564 / ASME SB564
ASTM A693 Grade XM16
HMS 6 1093 Rev G
UNS 45500

At Aircraft Materials all stock items can be shipped out within 24 hours, usually within the same day. Even cutting orders for bar or sheet can be processed and dispatched the same day, and for time-critical situations such as AOGs, we have a dedicated AOG service desk ready to help (

Thanks to our global logistics network we can source from anywhere in the world in just a few days. We use a range of transport partners to enable us to ship overnight within the U.K. and Europe and provide fast shipping solutions to the rest of the world. If your requirement is urgent we can offer a priority shipping service, but also if time is not so critical we can offer more cost-effective options to ensure you get the best value for money. To find out more about our services click here.

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

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