S159
2026-02-03 14:03:00 Origin： Remark：0 Click：
Martensitic high tensile steel S159 hardened round bar, flat bar, forgings S159 Electroslag remelt, 100% ultrasonic testing, hot forged / rolled, heat treated
TECHNICAL DATA SHEET - BS S159
Official test report: issued by TUV - SGS - BV
Material category: aerospace "S" Series alloy steel
Technical specifications: BS EN 3890-2002, BS EN 2344-2001
Melting process way: AOD / BEF + ESR
Typical chemical elements (mass weight %)
Typical chemical elements (mass weight %)
Carbon, C (％): 0.08 ~ 0.15
Silicon, Si (％): ≤ 0.35
Manganese, Mn (％): 0.50 ~ 0.90
Phosphorus, P (％): ≤ 0.030
Sulfur, S (％): ≤ 0.025
Chromium, Cr (％): 11.0 ~ 12.5
Nickel, Ni (％): 2.00 ~ 3.00
Molybdenum, Mo (％): 1.50 ~ 2.00
Silicon, Si (％): ≤ 0.35
Manganese, Mn (％): 0.50 ~ 0.90
Phosphorus, P (％): ≤ 0.030
Sulfur, S (％): ≤ 0.025
Chromium, Cr (％): 11.0 ~ 12.5
Nickel, Ni (％): 2.00 ~ 3.00
Molybdenum, Mo (％): 1.50 ~ 2.00
Niobium, Nb/Ti (%): -
Vanadium, V (％): 0.25 ~ 0.40
Nitrogen, N (%): 0.010 ~ 0.050
HEAT TREATMENT AND MECHANICAL PROPERTIES
Heat treatment temperature and cooling:
Heat treatment: Quenched 995 ~ 1025℃, oil/air cooled
Tempered 565℃ Min. 2 Hours, air cooled
Tensile strength, σb ≥ MPa: 1000
Tensile strength, σb ≥ MPa: 1000
Yield strength, σ0.2 ≥ MPa: 795
Elongation, A5 (%)≥: 15.0
Hardness ≤ HBW: 302 ~ 355
Elongation, A5 (%)≥: 15.0
Hardness ≤ HBW: 302 ~ 355
PRODUCT DESCRIPTION
S159 alloy is usually produced by AOD / EAF followed by electroslag refining (ESR or VAR) if necessary for special purpose. 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 + SRA.
S159 alloy is usually produced by AOD / EAF followed by electroslag refining (ESR or VAR) if necessary for special purpose. 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 + SRA.
SHAPES AND DIMENSIONS
Rod / round bar / disc (diameter1): 5.5mm to 900mm
Square bar / flat bar: 10mm to 600mm
Rod / round bar / disc (diameter1): 5.5mm to 900mm
Square bar / flat bar: 10mm to 600mm
Heavy / middle plate via hot rolled: T60 ~ 300mm X W200 ~ 1000mm X L1000 ~ 5000mm
Sheet steel via cold rolled: T0.5 ~ 6mm X W200 ~ 1000mm X L1000 ~ 2000mm
Steel strip via cold rolled: T0.1 ~ 3mm X W5 ~ 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
Steel strip via cold rolled: T0.1 ~ 3mm X W5 ~ 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
ADVANTAGE & SUPERIOR SERVICE
20+ years Focus On Special Steel Manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
20+ years Focus On Special Steel Manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
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