Alloy Case Hardening Steel 5S15

Technical Data Sheet


Chemical Composition Limits
Weight% C Si Mn P+S max Cr Ni
5S15 0.10-0.15 0.10-0.35 0.35-0.60 P 0.025
S 0.020
0.30 max 2.75-3.25
Chemically similar British Specifications BS.970 Pt4
Weight% C Si Mn P+S max Cr Ni
0.10-0.15 0.10-0.35 0.35-0.60 0.050 max 0.30 max 2.75-3.50
Other Chemically similar Specifications
Weight% C Si Mn P+S max Cr Ni
MSRR 6004 - - - - - -
WS 1.5637 0.12 max 0.10-0.35 0.30-0.60 0.035 - 3.20-3.80

Typical Mechanical Properties


Grade Treatment Tensile Strength Rm (tonf/in²) Elongation in 5.65 √Cross Sectional Area % 120D Impact FT. lbs Ruling Section
S15 Hardened and Tempered 50 12 35 3/4"

Alloy S15 is only available in Bar. For all stock availability contact Sales.

Customer Reviews - What Customers Say About Us!

"I would like to extend my gratitude to the entire staff at Aircraft Materials. It is a true pleasure to work with professionals in the aerospace industry. Keep up the great work!"
"Thank you very much, everything seems perfect. The quality of your cutting is superb."
"Could not fault your service."
"The service was perfect you had stock and same day collection"
"Item was very well packed"

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.