1.6946
2025-10-21 08:50:00 Origin： Remark：0 Click：
SEW 555 Quenched and tempered Steel 1.6946, is used for larger preshaped components in turbine and generator installations, shafts and discs mechanical parts
TECHNICAL DATASHEET - 1.6946
Material Category: hardened and tempered steel
Material Specification - SEW 555 or by agreement
Melting process way - EF + Consumable electrode remelted
HS code for Customs: 7228 4000 / 7228 5000 / 7228 6000
Typical chemical composition (mass weight %)
Carbon, C (％): 0.28 ~ 0.34
Silicon, Si (％): ≤ 0.35
Manganese, Mn (％): 0.30 ~ 0.80
Phosphorus, P (％)≤: 0.020
Sulfur, S (％)≤: 0.010
Chromium, Cr (％): 1.00 ~ 1.40
Molybdenum, Mo (％): 1.00 ~ 1.20
Nickel, Ni (％): 0.50 ~ 0.75
Vanadium, V (％): 0.25 ~ 0.35
MECHANICAL PROPERTIES - HOT WORKING
Hot working temperature / ℃: 1050 ~ 850
Hardness after annealing ≤ HBS: 255
Tensile strength, σb ≥ MPa: 700 ~ 850
Yield strength, σs ≥ MPa: 550
Elongation, δ5 ≥ (%): 12.0
Reduction of area, ψ ≥ (%): 40.0
Hot working temperature / ℃: 1050 ~ 850
Hardness after annealing ≤ HBS: 255
Tensile strength, σb ≥ MPa: 700 ~ 850
Yield strength, σs ≥ MPa: 550
Elongation, δ5 ≥ (%): 12.0
Reduction of area, ψ ≥ (%): 40.0
PRODUCT DESCRIPTION
Alloy structural steel is provided with higher yield strength, tensile strength, endurance strength, yield ratio (about 0.85 generally ) enough plasticity and toughness.
The alloy is usually produced by EAF / VD / LF followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied bright in the annealed condition, or bright annealing specially.
Final heat treatment - Quenched and tempered.
PROFILE & DIMENSIONS
Round bar / disc (diameter): 6.0 to 850 mm
Square bar / flat bar: 8 to 650 mm
Plate / Steel strip: 1.0 to 200 mm
Steel sheet: thickness 1.0 ~ 4.0, width 10 ~ 1000 X length 1000 / 2000mm - Standard size
Length: random length or based on the customer's special requirement
Forged steel shape: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to email or call our resident team of qualified production engineers. E-mail: sales@ccsteels.com.
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