MSRR 6503 - MSRR 6515 martensitic steel bar
2025-10-07 06:22:00   Origin：   Remark：0 Click：

MATERIAL SPECIFICATIONS - MSRR 6503 & MSRR 6515 & S151D
Official test report: issued by TUV - SGS -  BV
Material category: aerospace "S" Series alloy steel
Material specifications - BS S151, DTD 5066, MSRR 6503, MSRR 6514
Melting processing way - AOD / BEF + consumable electrode remelted
HS code for Customs 72201100 / 72202030 / 72221100 / 72222000 / 72223000

CHEMICAL COMPOSITIONS (mass fraction %)
Carbon, C (％): 0.08 ~ 0.13
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 (%): 0.02 ~ 0.04

HEAT TREATMENT AND MECHANICAL PROPERTIES
Heat treatment temperature and cooling: Heat treatment
Tensile strength, σb ≥ MPa: 930 ~ 1130
Yield strength, σ0.2 ≥ MPa: 760
Elongation, δ5 (%) ≥: 14.0
Hardness ≤ HBW: 285 ~ 331

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. 

PRODUCT FORMS & DIMENSIONS
Round bar / rod / disc (diameter): 6.0 to 850 mm
Square bar / flat bar: 10 to 500 mm
Heavy/middle plate via hot rolled: T60 ~ 400 X W50 ~ 10 X L1000 ~ 4000mm
Sheet steel via cold rolled: T1.0 ~ 3 X W10 ~ 300 X L1000 ~ 2000mm
Steel strip via cold rolled: T0.5 ~ 3mm X W5 ~ 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
With 20 years of accumulated know-how, we have confidence in producing Special Steel Making and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.

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.