S143
2025-03-19 14:44:00 Origin： Remark：0 Click：
Aerospace Martensitic Steel S143 Round bar, Flat bar, Forgings FV520B ESR ingot, S143 Bolts, Heat treatment
TECHNICAL DATA SHEET - S143
MATERIAL CATEGORY - Aerospace "S" Series alloy steel
OFFICIAL TEST CERTIFICATE - issued by TUV - SGS - BV
CHEMICAL COMPOSITIONS (mass weight - %)
Carbon, C (％): ≤ 0.07
Silicon, Si (％): ≤ 0.60
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.025
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 (％) ≤: 0.035
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 13.2 ~ 14.7
Nickel, Ni (％): 5.00 ~ 5.80
Molybdenum, Mo (％): 1.20 ~ 2.00
Niobium, Nb (%): 0.10 ~ 0.50
Copper, Cu (％): 1.20 ~ 2.00
HEAT TREATMENT AND MECHANICAL PROPERTIES
Heat treatment temperature and cooling
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
Elongation, δ5 (%) ≥: 15.0
Impact / Akv: 40J Min.
Hardness ≤ HBW: 277 ~ 341
Hardness ≤ HBW: 277 ~ 341
Final Heat treatment: solution 1050℃ + aged 550℃
Tensile strength, σb ≥ MPa: 1270 ~ 1470
Tensile strength, σb ≥ MPa: 1270 ~ 1470
Yield strength, σ0.2 ≥ MPa: 1030
Elongation, δ5 (%) ≥: 10.0
Hardness ≤ HBW: 375 ~ 429
Elongation, δ5 (%) ≥: 10.0
Hardness ≤ HBW: 375 ~ 429
PRODUCT DESCRIPTION
The alloy is usually produced by BEF 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 BEF 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 AND DIMENSIONS
Round bar / disc (diameter): 5.5 ~ 900mm
Square bar / Flat bar: 10 ~ 600mm
Length: Fixed length or random length or based on the customer's special requirement.
Square bar / Flat bar: 10 ~ 600mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T60 - 400mm X W60 - 1000mm X L1000 - 5000mm
Sheet steel via cold rolled: T0.5 - 6mm X W100 - 1000mm X L1000 - 2000mm
Forging piece: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
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