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Aircraft Steel BS S154 / S154D (MSRR 6043)


Technical Data Sheet

 

Chemical Composition Limits
Weight% C Si Mn P+S max Cr Mo Ni Al
2S96 0.27-0.35 0.10-0.35 0.45-0.70 P 0.025
S 0.020
0.50-0.80 0.45-0.65 2.30-2.80  
S154 0.27-0.35 0.15-0.35 0.45-0.70 P 0.025
S 0.020
0.50-0.80 0.45-0.65 2.30-2.80 0.015-0.050
Chemically similar British Specifications BS.970 Pt2
Weight% C Si Mn P+S max Cr Mo Ni
826M31 0.27-0.35 0.10-0.35 0.45-0.70

P 0.040
S 0.050

0.50-0.80 0.45-0.65 2.30-2.80
EN25 0.27-0.35 0.10-0.35 0.50-0.70

-

0.50-0.80 0.40-0.65 2.30-2.80
Other Chemically similar Specifications
Weight% C Si Mn P+S max Cr Mo Ni
UNI 30NiCrMo12 0.27-0.35 0.40 max 0.50-0.80 0.035 0.60-1.00 0.30-0.60 2.60-3.20

BS S154 is a 2.5% Nickel-chrome-moly steel, and the British aerospace equivalent ot 826M31 (EN25). It is generally supplied as bright bar in the finally heat treated and cold drawn/groun condition, designated S154D.

 

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
S154A Solution Annealed - - - 248 max  
S154A Hardened and Tempered 880-1080 690 12 255-321 6"

Availability
Alloy S154 is available in Bar. For all stock availability contact Sales.

Services
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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.