SAE 1055/AISI 1055 CARBON STEEL
SAE 1055/AISI 1055 Carbon Steel manufacturers and suppliers,delivered in round rods,square/flat bars,rollers,shafts,blocks and forging pieces.
SAE 1055/AISI 1055 Carbon Steel is a medium carbon steel which is characterized by good weldability, good machinability, high strength and impact properties in either the normalized or hot forged condition. SAE 1055/AISI 1055 steel is widely used for axles, bolts, forged connecting rods, crankshafts, torsion bars, light gears, guide rods etc.
| Chemical Composition | ||||||||
|
National Standard |
Grade | C | Si | Mn | Cr | Mo | P | S |
| DIN |
C55 (1.0535) |
0.52-0.6 | ≤0.4 | 0.6-0.9 | ≤0.4 | ≤0.1 | ≤0.035 | ≤0.035 |
| AISI/SAE | 1055 | 0.5-0.6 | 0.07-0.6 | 0.6-0.9 | – | – | ≤0.04 | ≤0.05 |
| JIS | S55C | 0.52-0.58 | 0.15-0.35 | 0.6-0.9 | ≤0.2 | – | ≤0.03 | ≤0.035 |
| GB | 55 | 0.52-0.6 | 0.17-0.37 | 0.5-0.8 | ≤0.25 | – | ≤0.035 | ≤0.035 |
| Size&Tolerance&Process | ||||
| Shape | Size(mm) | Process | Tolerance | Length(mm) |
| Round | Φ6-Φ50 | Cold Drawn | H11 | 3000-5800 |
| Round | Φ40-Φ300 | Hot Rolled | -0/+3mm | 3000-10000 |
| Round | Φ120-Φ1000 | Hot Forged | -0/+3mm | 3000-10000 |
| Flat/Square/Block |
Thickness:120-800 Width:120-1500 |
Hot Forged | -0/+3mm | 500-6000 |
Heat Treatment
Normalizing For SAE 1055
1.Nominal normalizing temperature:820-850°C
2.Hold the temperature for several hours
3.Cooling in the air
Annealing For SAE 1055
1.Nominal Annealing temperature:650-710°C
2.Cool slowly in the furance
3.Maximum Brinell hardness of 217
Hardening and Tempering(QT) For SAE 1055
1.Nominal Hardening temperature:820-870°C
2.Hold at this temperature then quench in oil or water
3.Tempering as soon as possible when the temperature low to ambient
4.Heat uniformly to the suitable temperature of 600-630°C
5.keep the material out of the furnace ,then cool in the air
Mechanical Property( for reference only)
1.Tensile strength: 645MPa
2.Yield point: 380MPa
3.Percentage reduction of area after fracture: 35%
4.Elongation after fracture: 13%
5.Impact test (+20°C): Transverse – 14-25J; Longitud – 36~48J
Delivery Condition
1.Shape:Round/Square / Flat/Shafts/Rollers/Blocks
2.Surface condition:Black surface/Bright surface
3.Heat Treatment:Normalized/Annealed/QT
4.Straightness:Max 3mm/m(Enhanced straightness may be available on request)
5.Length:3000-5800mm suitable for 20″container. above 6000mm,suitable for 40″ container
6.Grain Size: 5-8 acc to ASTM E112-96
7.Ultrasonic Standard: Sep1921/ASTM A388/EN 10228-3
8.Typical Hardness:HRC60
9.Non Metallic Inclusion: 2 max acc to ASTM E45 /K4≤20 acc to DIN 50602
10.Forging Ratio: minimum 4 : 1
11.Marking: Grade/Weight/Length/Size/Heat Number
Quality Certification
A material test report(Inspection Certificate EN 10204 3.1) will be provided, documenting the following:
1.Chemical analysis
2.Mechanical properties
3.Surface hardness
4.Non Metallic Inclusion
5.Heat Treatment Process
6.Grain size
7.Forging ratio
8.Ultrasonic test report