EN21
2020-10-01 08:19:00 Origin： Remark：0 Click：
BS 970 -3 Grade EN21 a high tensile steel, ESR Quality Structural Steel, EN 21 Hot forging, Hot rolling, Heat treatment, Straightening, Cold machined.
TECHNICAL DATA SHEET - Grade EN21
MELTING: Consumable electrode remelted
OFFICIAL TEST REPORT - issued by TUV - SGS - BV
OFFICIAL TEST REPORT - issued by TUV - SGS - BV
CHEMICAL COMPOSITIONS (mass weight - %)
Carbon, C (％): 0.25 ~ 0.35
Manganese, Mn (％): 0.35 ~ 0.75
Silicon, Si (％): 0.10 ~ 0.35
Phosphorus, P (％)≤: 0.035
Sulfur, S (％)≤: 0.015
Chromium, Cr (%): 0.20 ~ 0.40
Nickel, Ni (%): 2.75 ~ 3.25
Molybdenum, Mo (%): -
MECHANICAL PROPERTY AND HARDNESS
Quenching temperature /℃: 830, oil cooled.
Tempering temperature /℃: 480, water or oil
Tensile strength,σb/≥ MPa: 930
Carbon, C (％): 0.25 ~ 0.35
Manganese, Mn (％): 0.35 ~ 0.75
Silicon, Si (％): 0.10 ~ 0.35
Phosphorus, P (％)≤: 0.035
Sulfur, S (％)≤: 0.015
Chromium, Cr (%): 0.20 ~ 0.40
Nickel, Ni (%): 2.75 ~ 3.25
Molybdenum, Mo (%): -
MECHANICAL PROPERTY AND HARDNESS
Quenching temperature /℃: 830, oil cooled.
Tempering temperature /℃: 480, water or oil
Tensile strength,σb/≥ MPa: 930
Yield strength, σ0.2/≥ MPa: 785
Elongation, δ ≥(％): 9.0
Reduction of area, ф ≥(％): 45.0
Hardness in annealed condition: HB 241 max.
MELTING PROCESS & APPLICATION
This alloy is generally smelt in Electric Arc Furnace EAF+LF+VD, BEF + Electroslag remelting (ESR). For a purpose of superior quality, it should be smelt via technology of vacuum refining or by agreement.
It is suitable for applications such as high tensile shafts, bolts and nuts, gears, pinions spindles and so on.
AVAILABLE FORMS & DIMENSIONS
Round bar: 5.5mm to 550mm
Square bar / Flat bar: 10mm to 800mm
Length: Fixed length or 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. E-mail: sales@ccsteels.com.
Elongation, δ ≥(％): 9.0
Reduction of area, ф ≥(％): 45.0
Hardness in annealed condition: HB 241 max.
MELTING PROCESS & APPLICATION
This alloy is generally smelt in Electric Arc Furnace EAF+LF+VD, BEF + Electroslag remelting (ESR). For a purpose of superior quality, it should be smelt via technology of vacuum refining or by agreement.
It is suitable for applications such as high tensile shafts, bolts and nuts, gears, pinions spindles and so on.
AVAILABLE FORMS & DIMENSIONS
Round bar: 5.5mm to 550mm
Square bar / Flat bar: 10mm to 800mm
Length: Fixed length or 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. E-mail: sales@ccsteels.com.
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