S145 / 2S145
2026-03-11 10:29:00 Origin： Remark：0 Click：
Aerospace ESR quality steel S415 round bar, flat bar, FV520 forging from ssteelmaking, Electroslag remelting, hot forged & rolled, heat treated
TECHNICAL DATA SHEET - S145 & FV520B
Material category: aerospace "S" Series alloy steel
Material specifications: BS EN 3890-2002, BS EN 2344-2001, BS EN 3146-2001
Melting process way: consumable electrode remelted
Stock available: round bar diam. 30 ~ 130mm, ESR ingot.
Stock available: round bar diam. 30 ~ 130mm, ESR ingot.
TYPICAL CHEMICAL COMPOSITIONS (mass weight %)
Carbon, C (％): ≤ 0.07
Silicon, Si (％): ≤ 0.60
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.020
Chromium, Cr (％): 13.2～14.7
Nickel, Ni (％): 5.00 ~ 5.80
Molybdenum, Mo (％): 1.20 ~ 2.00
Silicon, Si (％): ≤ 0.60
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.020
Chromium, Cr (％): 13.2～14.7
Nickel, Ni (％): 5.00 ~ 5.80
Molybdenum, Mo (％): 1.20 ~ 2.00
Niobium, Nb/Ta (%): 0.10 ~ 0.40
Copper, Cu (％): 1.20 ~ 2.00
HEAT TREATMENT AND MECHANICAL PROPERTIES
Heat treatment temperature and cooling
Final Heat treatment: solution 1050℃ + aged 550℃
Tensile strength, Rm ≥ MPa: 1270~1470
Tensile strength, Rm ≥ MPa: 1270~1470
Yield strength, Rp0.2 ≥ MPa: 1030
Elongation, A5 (%) ≥: 10.0
Hardness ≤ HBW: 375 ~ 429
Elongation, A5 (%) ≥: 10.0
Hardness ≤ HBW: 375 ~ 429
Final Heat treatment: solution 1050℃ + aged 620℃
Tensile Strength, σb ≥ MPa: 930 ~ 1080
Tensile Strength, σb ≥ MPa: 930 ~ 1080
Yield Strength, σ0.2 ≥ MPa: 780
Elongation, δ5 (%) ≥: 15.0
Hardness ≤ HBW: 277 ~ 341
Elongation, δ5 (%) ≥: 15.0
Hardness ≤ HBW: 277 ~ 341
PRODUCT DESCRIPTION
The alloy is usually produced by EAF + AOD / VIM followed by electroslag refining (ESR) / 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 black/bright in the annealed condition.
Final heat treatment - solution treatment + aged.
The alloy is usually produced by EAF + AOD / VIM followed by electroslag refining (ESR) / 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 black/bright in the annealed condition.
Final heat treatment - solution treatment + aged.
PROFILE & DIMENSIONS
Round bar / rod / disc (diameter): 6.0 to 850 mm
Square bar / flat bar: 10 to 600 mm
Length: random length or based on the customer's special requirement.
Forging piece: stepped shafts, and other different shapes based on OEM.
Square bar / flat bar: 10 to 600 mm
Length: random length or based on the customer's special requirement.
Forging piece: stepped shafts, and 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.
CNC saw cutting.
Marking by stamping or printing.
Third party inspection service.
Export packing / Export documents.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
20+ years Focus On Special Steel Manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
CNC saw cutting.
Marking by stamping or printing.
Third party inspection service.
Export packing / Export documents.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
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