S144
2026-03-14 15:50:00 Origin： Remark：0 Click：
S144 is generally supplied with special melting process ESR aerospace quality, S144 offers high tensile and hardness. S144 round bar, flat bar, and forgings
TECHNICAL DATA SHEET - BS S144
Material category: aerospace "S" Series alloy steel
Technical specifications: BS EN 3890-2002, BS EN 2344-2001, BS EN 3146-2001
Melting process ways: consumable electrode remelted
Stock & Inventory: round bar Dia 15 ~ 130mm, ESR ingot.
HS code for Customs: 72201100 / 72202030 / 72221100
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
Molybdenu, Mo (％): 1.20 ~ 2.00
Niobium, Nb (%): 0.10 ~ 0.40
Copper, Cu (％): 1.20 ~ 2.00
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
Molybdenu, Mo (％): 1.20 ~ 2.00
Niobium, Nb (%): 0.10 ~ 0.40
Copper, Cu (％): 1.20 ~ 2.00
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Heat treatment temperature and cooling: final Heat treatment
Tensile strength, Rm ≥ MPa: 1130 ~ 1330
Yield strength, Rp0.2 ≥ MPa: 1030
Elongation, A5 (%) ≥: 12.0
Immpact, AKv ≥: 40J
Hardness ≤ HBW: 352 ~ 401
PRODUCT DESCRIPTION
The alloy is usually produced by AOD / EAF 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 bright in the annealed condition.
Final heat treatment - solution treatment + aged.
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.
Customizing special material is welcome.
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.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
If you meet further on any technical enquiry or help, pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
Jiangyou Longhai Special Steel Co.,Ltd
ISO 9001-2015 Certified
Stock Available - round bar, flat bar, plate, forgings
Custom 450 / XM-25, 403ESR, AISI 616 / 422 ESR, B50A365B / 403Cb+ / 1.4913
17-4PH / 630 / 1.4542, M-152 / 1.4938 / S151D, FV520B / S143 / 1.4594. X22CrMoV12-1
13Х11Н2B2MФ / AE961W, 15-5PH / XM-12 (S15500), A286 / AISI 660 / S66286
10705BU, 10705MBU, 10705AJ, 10705GU/GV/GW
ISO 9001-2015 Certified
Stock Available - round bar, flat bar, plate, forgings
Custom 450 / XM-25, 403ESR, AISI 616 / 422 ESR, B50A365B / 403Cb+ / 1.4913
17-4PH / 630 / 1.4542, M-152 / 1.4938 / S151D, FV520B / S143 / 1.4594. X22CrMoV12-1
13Х11Н2B2MФ / AE961W, 15-5PH / XM-12 (S15500), A286 / AISI 660 / S66286
10705BU, 10705MBU, 10705AJ, 10705GU/GV/GW
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