Barras redondas de acero
Production Process:
Blast Furnance→ Molten Iron Pretreatment→Converter→LF→VD/RH→
ContinuousCasting→Hot Rolling(KOCKS)→ Heat Treatment→ UT Inspection→ Finish Product
EAF→LF→VD/RH→ Continuous Casting→Hot Rolling(KOCKS)→ Heat Treatment→ UT Inspection→ Finish Product
Gas Content Requirements:O2 - <20 ppm H2 - <2 ppm N2- <100 ppm
Nonmetal impurity:2
Grain Size:5 to 8
Macro Etch:Not more than Grade 2(C2R2S2)
High Quality Carbon Structural Steel |
Shape | Round Flat Square H-beam Hexagon Deformed |
Production Process | EAF+LF+(VD+ROLLED+DRAWN+FORGED+HEAT TREATMENT+ SURFACE TREATMENT) OPITIONAL |
Heat Treatment | Normalizing Annealing Quenching Tempering |
Model(GB) | S20Cr | S40Cr | S45Cr | S50Cr | S55Cr | S60Cr |
Other Standards (JIS, DIN, AISI, SAE, BS) | S20C 1020 C22 | S40C 1040 1039 060A40 080A40 080M40 | S45C C45B(1.0503) CK45(1.1191) Cm45(1.1201) | 1050 1053 08M50 | S55C C55(1.0535) CK55(1.1181) Cm55(1.1209) 1050 070M55 060A57 080A57 | S58C C60(1.0601) CK60(1.1221) Cm60(1.1223) 1060 060A62 080A62 |
Chemical Composition (%) | C | 0.17- 0.24 | 0.37- 0.45 | 0.42- 0.50 | 0.47- 0.55 | 0.52- 0.60 | 0.57- 0.65 |
Si | 0.17- 0.37 | 0.17- 0.37 | 0.17- 0.37 | 0.17- 0.37 | 0.17- 0.37 | 0.17- 0.37 |
S | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
P | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
Mn | 0.35- 0.65 | 0.50- 0.80 | 0.50- 0.80 | 0.50- 0.80 | 0.50- 0.80 | 0.50- 0.80 |
Yield Strength σs (MPa) | ≥245 | ≥335 | ≥355 | ≥375 | ≥380 | ≥400 |
Tensile Strength σb (MPa) | ≥410 | ≥570 | ≥600 | ≥630 | ≥645 | ≥675 |
Elongation Δ5 (%) | ≥25 | ≥19 | ≥16 | ≥14 | ≥13 | ≥12 |
AKV (J) | ≥39 | ≥47 | ≥39 | ≥31 |
|
|
Contraction % | ≥25 | ≥19 | ≥16 | ≥14 | ≥13 | ≥12 |
Hardness(HBS)(max) | Unheated | 156 | 217 | 229 | 241 | 255 | 255 |
Annealed |
| 187 | 197 | 207 | 217 | 229 |
Application | Lever shaft, Transmission shift folk, Heavy machinery trolley, Wheel gear, Mental loop, press forging parts, Rack rod, wear-resistant parts, Turbine impeller Worm gear piston compressor, Carbonitriding pieces General service industries (petroleum, food, chemical, paper, fertilizer, Fabric, aviation and nuclear) Fluid, gas and oil transport, Pressure and heat transmission Construction and ornament, Boiler heat exchangers |
Condition of Delivery | According to customer's requirement |
Dimensions(mm) | Round Bar | Diameter:20mm-800mm |
Square Bar | 10*10--130*130 |
Qingdao Helio Steel Co., Ltd. Was established in March19, 2012. Our company's business staff members possess professional service capabilities of steel products, with more than a decade of experience on steel production, technology development, product sales and foreign trade. We comply the principle of friendly cooperation and mutual benefit, and persist in developing together with new and old customers.
Our company is located in Qingdao, a coastal city of Shandong Province, which is near Laiwu Steel Group. Only Laiwu City has steel production capacity of 20 million tons each year. Meanwhile, it is also the largest production base of powder metallurgy products in the whole country. Otherwise, there are more than ten well-known steel manufacturers within the province and the surrounding areas, so steel resources here is abundant and we can meet customers' various requirements.
Our company is mainly engaged in steel products for various specifications and materials, such as continuous casting billets, continuous casting tubes, hot-rolled bars, tubes, hot-rolled square steel, flat steel, H section steel, hot-rolled coils, cold-roll large-size panels, forging materials, and forgings.
We also run the import and export of steel products, based on the needs of customers at home and abroad to develop a variety of special steel products and timely delivery. I hope to sincerely cooperate with domestic and foreign customers, providing high-quality and low-priced products and professional services.