Aircraft Steel BS S132 / 3S132D

Technical Data Sheet


Chemical Composition Limits
Weight% C Si Mn P+S max Cr Mo Ni Other
3S132 0.35-0.43 0.10-0.35 0.40-0.70 P 0.020
S 0.020
3.0-3.5 0.80-1.10 0.30 max V 0.15 - 0.25
Sn 0.030

BS S132 is a 3% chrome-moly-vanadium steel suitable for nitriding. It offers high strength and hard wear resistance after surface treatment, making it widely used in gearbox shafts and crankshafts. It is supplied in as bright bar in the softened and cold drawn/ground condition, designated S132D.

Typical Mechanical Properties

Grade Treatment Tensile Strength Rm N/mm² Proof Stress Rp 0.2, N/mm² Elongation in 5.65 √Cross Sectional Area% Hardness HB Ruling Section
S132 Solution Annealed - - - 277 max -
S132 Hardened and Tempered 1320-1470 1130 8 388-429 2 3/4"

Alloy S132 is available in Bar. For all stock availability contact Sales.

At Aircraft Materials we specialise in the rapid turn-around of orders, with most stock items ready for shipping out the same day to anywhere in the world. For time-critical orders, such as AOGs use our AOG service desk (, the team are dedicated to processing and dispatching orders on the same day, even for cutting orders on bar and sheet products.

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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.