S124
2026-07-15 16:00:00 Origin： Remark：0 Click：
Technical specifications of BS S124 aerospace standards alloy steel BS S124 round bar, flat bar, plate, chemical composition properties from steelmaking, Electroslag remelting.
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - CNAS
TECHNICAL DATA SHEET - BS S124
Material category: aerospace "S" Series alloy steel
Technical specification: BS EN 3890-2002, BS EN 2344-2001, BS EN 3146-2001
Typical chemical elements (mass weight - %)
Carbon, C (％): 0.15 ~ 0.25
Silicon, Si (％): ≤1.00
Manganese, Mn (％): ≤1.50
Phosphorus, P (％): ≤ 0.045
Sulfur, S (％): 0.015 ~ 0.040
Chromium, Cr (％): 12.0 ~ 14.0
Nickel, Ni (％): ≤ 1.00
Molybdenum, Mo (％): ≤ 0.60
Silicon, Si (％): ≤1.00
Manganese, Mn (％): ≤1.50
Phosphorus, P (％): ≤ 0.045
Sulfur, S (％): 0.015 ~ 0.040
Chromium, Cr (％): 12.0 ~ 14.0
Nickel, Ni (％): ≤ 1.00
Molybdenum, Mo (％): ≤ 0.60
Niobium, Nb/Ti (%): -
Other(％): Zr ≤ 0.60
HEAT TREATMENT AND MECHANICAL PROPERTIES
Heat treatment temperature and cooling: Heat treatment
Tensile strength, σb ≥ MPa: 695 ~ 849
Tensile strength, σb ≥ MPa: 695 ~ 849
Yield strneght, σ0.2 ≥ MPa: 448
Elongation, δ5 (%) ≥: 11.0
Hardness ≤ HBW: 201 ~ 255
Elongation, δ5 (%) ≥: 11.0
Hardness ≤ HBW: 201 ~ 255
PRODUCT DESCRIPTION
The alloy is usually produced by AOD / VOD / EAF. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied bright in the annealed condition.
Final heat treatment: quenched and tempered.
The alloy is usually produced by AOD / VOD / EAF. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied bright in the annealed condition.
Final heat treatment: quenched and tempered.
HEAT TREATMENT PRACTICE
Heat treatment is only suitable for specific grades of stainless steel. When heat treating a stainless the hardening temperatures, including rate of heating, cooling and soaking times will vary due to several factors such as the shape and size of each component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult with the heat treatment provider for whole guidance on heat treatment of stainless steel grades. We are delighted to help to work with you the special heat treatment based on your special requirements.
Heat treatment is only suitable for specific grades of stainless steel. When heat treating a stainless the hardening temperatures, including rate of heating, cooling and soaking times will vary due to several factors such as the shape and size of each component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult with the heat treatment provider for whole guidance on heat treatment of stainless steel grades. We are delighted to help to work with you the special heat treatment based on your special requirements.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers. Email: sales@ccsteels.com.
PRODUCT PROFILE & DIMENSIONS
Round bar / rod / disc (diameter): 6.0 to 750 mm
Square bar / flat bar: 10 to 600 mm
Length: random length or based on the customer's special requirement.
Round bar / rod / disc (diameter): 6.0 to 750 mm
Square bar / flat bar: 10 to 600 mm
Length: random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 ~ 200 X W10 ~ 1300 X L1000 ~ 12000mm
Sheet steel via cold rolled: T0.5 ~ 6 X W60 ~ 1000 X L1000 ~ 2000mm
Steel strip via cold rolled: T0.3 ~ 3 X W10 ~- 200 X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
Steel strip via cold rolled: T0.3 ~ 3 X W10 ~- 200 X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
