Type: | Alloy Steel Bar |
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Standard: | AISI, ASTM, GB, JIS, DIN, BS |
Technique: | Hot Rolled |
Application: | Structural Steel Bar, Tool Steel Bar, Die Steel Bar |
Surface Treatment: | Black/Peeling/Polishing/Machining/Grinding/Turning |
Alloy: | Alloy |
Samples: |
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Customization: |
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It includes non-circular cross-section profile, equal wall thickness, variable wall thickness, variable diameter and wall thickness along the length direction, symmetrical and asymmetric cross-section. Such as square, rectangular, conical, trapezoidal, spiral, etc. The special-shaped steel pipe can better adapt to the particularity of the use conditions, save metal and improve the labor productivity of parts manufacturing. It is widely used in aviation, automobile, shipbuilding, mining machinery, agricultural machinery, construction, textile and boiler manufacturing. The methods of producing special-shaped pipes include cold drawing, electric welding, extrusion, hot rolling, etc., and the cold drawing method has been widely used.
composition | C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
Q195 | ≤0.12 | ≤0.3 | ≤0.5 | ≤0.035 | ≤0.04 | ≤0.3 | ≤0.3 | ≤0.3 | - |
Q235 | ≤0.22 | ≤0.35 | ≤1.4 | ≤0.045 | ≤0.5 | ≤0.3 | ≤0.3 | ≤0.3 | - |
Q345 | ≤0.2 | ≤0.5 | ≤17 | ≤.035 | ≤0.0335 | ≤0.3 | ≤0.5 | ≤0.3 | - |
Q390 | ≤0.2 | ≤0.5 | ≤1.7 | ≤0.035 | ≤0.035 | ≤0.3 | ≤0.5 | ≤0.3 | ≤0.1 |
10# | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.03 | ≤0.15 | ≤0.3 | ≤0.3 | - |
15# | 0.12-0.18 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.03 | ≤0.2 | ≤0.3 | ≤0.25 | - |
20# | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.3 | ≤0.25 | - |
25# | 0.22-0.29 | 0.17-0.37 | 0.5-0.8 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.3 | ≤0.25 | - |
30# | 0.27-0.34 | 0.17-0.37 | 0.5-0.8 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.3 | ≤0.25 | - |
35# | ≤0.17 | ≤0.35 | ≤1.4 | ≤0.04 | ≤0.04 | ≤0.3 | ≤0.3 | ≤0.3 | - |
40# | 0.37-0.44 | 0.17-0.37 | 0.5-0.8 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.3 | ≤0.25 | - |
45#/S45C C45 CK45/1045/1042/C45E /Ck45/1.1191/ 1.0503 | 0.42-0.5 | 0.17-0.37 | 0.5-0.8 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.3 | ≤0.25 | - |
55# | 0.52-0.6 | 0.17-0.37 | 0.5-0.8 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.3 | ≤0.25 | - |
16Mn | 0.13-0.2 | 0.2-0.6 | 1.2-1.6 | ≤0.025 | ≤0.01 | ≤0.3 | ≤0.3 | ≤0.2 | |
20Cr | 0.18-0.24 | 0.17-0.37 | 0.5-0.8 | ≤0.035 | ≤0.035 | 0.7-1 | ≤0.3 | ≤0.3 | ≤0.15 |
40Cr | 0.37-0.44 | 0.17-0.37 | 0.5-0.8 | ≤0.035 | ≤0.035 | 0.8-1.1 | ≤0.3 | ≤0.3 | ≤0.15 |
15CrMo | 0.12-0.18 | 0.17-0.37 | 0.4-0.7 | ≤0.035 | ≤0.035 | 0.8-1.1 | ≤0.3 | ≤0.3 | 0.4-0.55 |
20CrMo | 0.17-0.24 | 0.17-0.37 | 0.4-0.7 | ≤0.035 | ≤0.035 | 0.8-1.1 | ≤0.3 | ≤0.3 | 0.15-0 .25 |
30CrMo/4130/SCM420/25CrMo4/1.7218 | 0.26-0.34 | 0.17-0.37 | 0.4-0.7 | ≤0.035 | ≤0.035 | 0.8-1.1 | ≤0.3 | ≤0.3 | 0.15-0.25 |
35CrMo | 0.32-0.4 | 0.17-0.37 | 0.4-0.7 | ≤0.035 | ≤0.035 | 0.8-1.1 | ≤0.3 | ≤0.3 | 0.15-0.25 |
42CrMo/4140 | 0.38-0.45 | 0.17-0.37 | 0.5-0.8 | ≤0.035 | ≤0.035 | 0.9-1.2 | ≤0.3 | ≤0.3 | 0.15-0.25 |
5120 | 0.17-0.22 | 0.15-0.35 | 0.7-0.9 | ≤0.035 | ≤0.035 | 0.7-0.9 | ≤0.25 | ≤0.35 | ≤0.06 |
Production Range |
Outer Diameter:6-530mm (0.24 inch - 21.18 inch) |
Wall Thickness:0.8-200mm (0.03 inch - 7.89 inch) | |
Material / Grade |
Carbon Steel: GB/T 3094: 10#, 20#, 35#, 45#, 55#, Q235B, Q235C, CF53, A105 ASTM A519: 1010, 1020, 1026, 1035, 1045, 1050 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: C10/CK10, C22/CK22, C35/CK35, C45/CK45, CF53 JIS3441/JIS3444/JIS3445: STKM11A, STKM12A/STKM12B/STKM12C, STKM13A/STKM13B/STKM13C JIS G4051: S10C, S20C, S25C, S35C, S45C, S55C |
Alloy Steel: GB/T 3094: 16Mn(Q345B), 20Cr, 40Cr, 15CrMo, 20CrMo, 28CrMo, 30CrMo, 35CrMo, 42CrMo, 20CrMnTi, 40MnMoV, 20Mn2, ZF6, 16MnCr5, 20MnCr5, 38Mn2V, 09CrCuSb(ND) ASTM A519: 5120, 5140, 4130, 4135, 4140 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: ST52, EN10084-1998 20Cr4, 41Cr4, 15CrMo4, 25CrMo4, 35CrMo4, 42CrMo4, 16MnCr5 JIS3441/JIS3444/JIS3445: SCM432/SCRRM3, SCM4 JIS G4053: JIS SCr420, JIS SCr440, SCM415, SCM420 |
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Tolerance | Can be customized according to customer's requirements |
Technique | Cold Drawn / Cold Rolled |
Shape | Triangle, Hexagon, Square, Rectangle, Octagon, Lemon Pipe and Others can be customized |
Further Processing for Steel Tubes | Cutting, Chamfer, Threading, Inner diameter or Outer Diameter Lathe, Surface Shot Blasting, Laser Marking |
Brand | Sample blank size/mm | mechanical property | Hardness of steel delivered | |||||
Normalizing/quenching/ tempering | ób/MPa | ós/MPa | δ5(%) | Ψ(%) | AKu2/J | |||
≥ | Unheat-treated steel | Annealed steel | ||||||
1010 | 25 | 930-/-/ | 315 | 185 | 33 | 55 | 137 | |
1020 | 25 | 910/-/- | 4lO | 245 | 25 | 55 | 156 | |
1025 | 25 | 900/870/600 | 450 | 275 | 23 | 50 | 170 | |
1030 | 25 | 880/860/600 | 490 | 295 | 21 | 50 | 179 | |
1035 | 25 | 870/850/850 | 530 | 315 | 20 | 45 | 197 | |
1040 | 25 | 860/840/60D | 570 | 335 | 19 | 45 | 217 | 187 |
1045 | 25 | 850/840/600 | 600 | 355 | 16 | 40 | 229 | 197 |
1050 | 25 | 830/830/600 | 630 | 375 | 14 | 40 | 24l | 207 |
1055 | 25 | 820/820/600 | 645 | 380 | 13 | 35 | 255 | 217 |
1060 | 25 | 810/-/- | 675 | 400 | 12 | 35 | 255 | 229 |
1065 | 25 | 810/-/- | 695 | 410 | lO | 30 | 255 | 229 |
The cold plasticity of the steel is general, annealing, normalizing than tempering is slightly better, with higher strength and better machinability, after appropriate heat treatment can obtain a certain toughness, plasticity and wear resistance, the material source is convenient. Suitable for hydrogen welding and argon arc welding, not very suitable for gas welding. Preheat is required before welding, and stress removal annealing should be carried out after welding. Normalizing can improve the cutting performance of blank with hardness less than 160HBS. After quenching and tempering treatment, the comprehensive mechanical properties of the steel should be optimized in other medium carbon structural steel, but the steel hardenability is low, the critical quench diameter in water is 12~17mm, and there is a cracking tendency in water quench. When the diameter is greater than 80mm, its mechanical properties are similar after tempering or normalizing, and high strength can be obtained after tempering for medium and small die parts.
Packaging |
1. by bundles, each bundle weight under 3 tons, for small outer diameter steel bars, each bundle with 4 - 8 steel strips. 2. after making by bundle, covered with Polyethylene waterproof cloth. 3. make black paints painting on each bar, then make bundles |
20 feet container contains dimension | Length under 6000mm |
40 feet container contains dimension | Length under 12000mm |
By bulk vessel | Freight charge is low by bulk cargo, and large heavy sizes can not be loaded into containers can shipping by bulk cargo |
1. Who are we?
Our headquarter is located in Shandong, China. Since 2022, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.
2. How do we guarantee quality?
Always provide pre-production samples before mass production;
Always carry out final inspection before shipment;
3. What can you buy from us?
Copper, aluminum, die steel, titanium, customized machine parts
4. Why should you buy from us instead of other suppliers?
The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.
5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW
Accepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;
Accepted payment type: T/T, L/C, D/P D/A, PayPal;
Optional ports: Tianjin, Shanghai, Guangzhou;
Spoken: English, Chinese
6. How can we get your price?
A. We need the following information to quote for you:
1). Product Name
2). standard
3). Material grade (chemical composition)
4). dimension
5). amount
6). Special part drawing
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