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Aircraft Steel BS S535


Technical Data Sheet

 

Chemical Composition Limits
Weight% C Si Mn P + S max Cr Mo Ni
S535 0.22-0.29 0.15-0.35 0.50-0.80 P 0.02
S 0.025
0.90-1.20 0.15-0.25 0.3

BS S535 is an alloy steel, similar to U.S. specification 4130 (AMS 6350). It is supplied in sheet form in the softened condition, usually dual certified to BS S534 for subsequent heat treatment, depending on the properties required. Heat treatment is as follows:

S534 Harden 870°C + Oil quench / Temper 540°C (2hrs) + air cool
S535 Harden 870°C + Oil quench / Temper 420°C (2hrs) + air cool

Typical Mechanical Properties

Grade Condition Tensile Strength N/mm² Yield Strength N/mm² Elongation (%) Hardness (HB) Ruling Section
S535 Hardened & Tempered 1150-1300 1000 4 341-388 <1.5mm
S535 Hardened & Tempered 1150-1300 1000 5   1.5mm - 3.0mm
S535 Hardened & Tempered 1150-1300 1000 6   >3.0mm
S535 Softened       174 max  

Availability
Alloy S535 for all stock availability contact Sales.

Specifications
AISI 4130
AMS 6370-4130 Sheet/ Strip/Plate
WS 1.7214
25CD45

Services
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 (aog@aircraftmaterials.com).

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.

Disclaimer
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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