Alloy Steel S515 - widely used in the Aerospace industry

Alloy Steel S515

High Strength Steel BS 2S 515, Specification for carbon-manganese steel sheet and strip (softened) (for use in the softened condition: 460/600MPa) (suitable for welding)

Product description

BS 2S 515 or more commonly referred to as S515 is a British Standard Aerospace Series, high strength alloyed steel available in sheet and strip form.  S515 has a tensile range 460-600 MPa where its sibling S514 has a typical tensile range 770-1000 MPa when supplied in its hardened and tempered condition.  Where S514 is supplied in the softened condition, it has a hardness only mechanical requirement which is the same as S515, and is therefore often duel released to both standards; BS S515/ S514 (softened condition).

The manganese content in carbon steels is often increased for the purpose of increasing depth of hardening and improving strength and toughness. Carbon steels containing over 1.2% up to approximately 1.8% manganese are referred to as carbon-manganese steels.

As a carbon manganese based alloy steel, BS S515 and S514 are readily weldable without concerning affects of any heat affected zones.

Coupled with the tube T45, S515 and S514 are extensively used in the construction of roll cages, safety cells, fuselages and chassis.

Technical Specification

Specification Material Publication Date
BS 2S 515 Specification for carbon-manganese steel sheet and strip (softened) (for use in the softened condition: 460/600MPa) (suitable for welding) 24/02/1969
BS 2S 514 Specification for carbon-manganese steel sheet and strip (for use in the hardened and tempered condition: 770/1000 MPa) (suitable for welding) 24/02/1969

BS S515 & BS S514 carry the exact same chemistry requirements as the British Standard Aerospace Series tubing BS4 T45 and are the perfect welding partners.

Technical Data

Mechanicals Chemistry
SpecificationTensile StrengthYield StrengthElongation
S515460-600 Mpa-17%
S514770-1000 Mpa630 Mpa Min10%
ElementLower %Upper %
Carbon0.1700.250
Manganese1.3001.700
Silicon0.1000.350
Phosphorus-0.040
Sulfur-0.040
Chromium-0.250
Molybdenum-0.100
Columbium (Niobium)--
Titanium--
Aluminium--
Cobalt--
Copper--
Nickel-0.400

Aerocom Stock List

Sheet & Plate
Sheet Size (Inches)
Thickness (Inches)2000mm x 350 mm
0.710X
0.910X
1.220X
1.630X
2.030X
2.640X
3.250X
4.060X
4.880X
6.350X

Our Approvals

Leonardo Aerostructures Leonardo Aircraft Leonardo Helicopters Airbus Helicopters
UTC SAFRAN GE Power ISO9001:2015
AS9120B Westland SQA50 Britten-Norman

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