735A51 / EN47
2026-04-02 06:42:00   Origin：   Remark：0 Click：

TECHNICAL DATA SHEET - 735A51 & EN 47

Material Cateory: 1.15Cr - 0.85Mn - 0.15V base alloy spring steel
Material specifications: BS 970-2 -1988
Special melting process: consumable electrode remelted
H S code for customs: 7228 4000 / 7228 5000 / 7228 6000
Official test report: issued by TUV - SGS -  BV
Typical chemical elements (mass fraction %)
Carbon, C (％): 0.48 ~ 0.54
Silicon, Si (%): 0.20 ~ 0.35
Manganese, Mn (％): 0.70 ~ 1.00
Phosphorus, P (％): ≤ 0.035
Sulfur, S (％): ≤ 0.035
Chromium, Cr (%): 0.90 ~ 1.20
Molybdenum, Mo (%): -
Vanadium, V (%): 0.10 ~ 0.20

TYPICAL MECHANICAL PROPERTIES
Tensile strength, σb ≥ MPa: 1275
Yield strength, σ0.2 ≥ MPa: 1125
Elongation, A5 ≥ (％): 10.0
Reduction of area, Z (%): -
Condition of delviery: hot rolled
Annealed hardness, HB ≤: 321

MELTING PROCESS
This alloy is generally air melted of Non-VIM + ESR, Electric Arc Furnace (EAF), EAF+LF+VD, EF + Electroslag remelting ESR). For a purpose of superior quality, it should be smelt via technology of vacuum refining or by agreement.

FORMS AND DIMENSIONS
Rod / round bar / disc (diameter): 6.0 to 850 mm
Square bar / flat bar: THK1.0 to 200 X width 3 ~ 450 mm
Length: random length or based on the customer's special requirement.
Other different shapes based on OEM.

TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers - Email: sales@ccsteels.com.