1.1203 DIN CK55 Special Steel Flat Bar AISI 1055 UNS G10550 Carbon Steel
Size Range
Round bar / Wire rod (Diameter): 1.0 mm to 500 mm
Square bar / Flat bar:5.0 mm to 500 mm
Forging piece: Stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
Heavy/middle plate via hot rolled: T3 - 1000 mm X W10 - 1000 mm X L1000-12000 mm
Sheet steel via cold rolled: T1.5 - 10 mm X W5 - 1000 mm X L100 - 1000 mm
Steel strip via cold rolled: T0.5 - 10 mm X W5 - 1000 mm X L (or in coil form)
Length: Fixed length or random length or based on the customer's special requirement.
Chemical Composition and standard
| CK55/1.1203 | AISI 1055/UNS G10550 | C55E/1.1203 | JIS S55C |
| DIN 17200-1987 | ASTM A29/A29M-2020 | EN 10083-2-2006 | JIS G 4051-2016 |
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C(％): 0.52~0.60
Si(％): ≤0.4
Mn(％): 0.6~0.9
P(％)≤: 0.035
S(％)≤: 0.03
Cr(％): --
Ni(％): --
Mo(%): -- | C(％): 0.50~0.60
Si(％): --
Mn(％): 0.6~0.9
P(％)≤: 0.04
S(％)≤: 0.05
Cr(％): --
Ni(％): -- Mo(%): -- | C(％): 0.52~0.6
Si(％): ≤0.4
Mn(％): 0.6~0.9
P(％)≤: 0.03
S(％)≤: 0.035
Cr(％): ≤0.4
Ni(％): ≤0.4 Mo(%): ≤0.1 Cr+Mo+Ni: ≤0.63 | C(％): 0.52~0.58
Si(％): 0.15~0.35
Mn(％): 0.6~0.9
P(％)≤: 0.03
S(％)≤: 0.035
Cr(％): ≤0.2
Ni(％): ≤0.2 Mo(%): -- Cu(%): ≤0.3 Cr+Ni(%): ≤0.35 |
C55E/1.1203 Mechanical Properties
Dimension: d≤16
Tensile strength,Rm/MPa: 800~950
Yield strength,Rp/MPa: ≥550
Elongation/%: ≥12
Charpy Impact/J: ≥30
Dimension: 16<d≤40
Tensile strength,Rm/MPa: 750~900
Yield strength,Rp/MPa: ≥500
Elongation/%: ≥14
Charpy Impact/J: ≥35
Dimension: 40<d≤100
Tensile strength,Rm/MPa: 700~850
Yield strength,Rp/MPa: ≥430
Elongation/%: ≥15
Charpy Impact/J: ≥40
Dimension: 16<d≤100
Tensile strength,Rm/MPa: 660~830
Yield strength,Rp/MPa: ≥360
Elongation/%: ≥--
Charpy Impact/J: ≥15
Applications
C55E/1.1203 is applied to quenching and tempered spring, shaft, band, crankshaft
Contact us
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1.1203 DIN CK55 Special Steel Flat Bar AISI 1055 UNS G10550 Carbon Steel Images
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