Type: | Round |
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Standard: | AISI, ASTM, DIN, JIS, GB, BS |
Composition: | Alloy Steel |
Technique: | Hot Rolled |
Shape: | Bar |
Surface Treatment: | Bright, Chrome Plated |
Samples: |
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Customization: |
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Material | component | C | Si | Mn | P | S | Cr | Ni | Cu |
ASTM 1320 GB 20Mn2 | minimum value | 0.17 | 0.17 | 1.4 | - | - | - | - | - |
maximum value | 0.24 | 0.37 | 1.8 | 0.035 | 0.035 | 0.3 | 0.3 | 0.3 | |
ASTM 1330 GB 30Mn2 | minimum value | 0.27 | 0.17 | 1.4 | - | - | - | - | - |
maximum value | 0.34 | 0.37 | 1.8 | 0.035 | 0.035 | 0.3 | 0.3 | 0.3 | |
ASTM 1335 GB 35Mn2 | minimum value | 0.32 | 0.17 | 1.4 | - | - | - | - | - |
maximum value | 0.39 | 0.37 | 1.8 | 0.035 | 0.035 | 0.3 | 0.3 | 0.3 | |
ASTM 1340 GB 40Mn2 | minimum value | 0.37 | 0.17 | 1.4 | - | - | - | - | - |
maximum value | 0.44 | 0.37 | 1.8 | 0.035 | 0.035 | 0.3 | 0.3 | 0.3 | |
ASTM 1345 GB 45Mn2 | minimum value | 0.42 | 0.17 | 1.4 | - | - | - | - | - |
maximum value | 0.49 | 0.37 | 1.8 | 0.035 | 0.035 | 0.3 | 0.3 | 0.3 | |
GB 50Mn2 DIN 50Mn7 | minimum value | 0.47 | 0.17 | 1.4 | - | - | - | - | - |
maximum value | 0.55 | 0.37 | 1.8 | 0.035 | 0.035 | 0.3 | 0.3 | 0.3 |
Item | Hard Chromed Rod | Induction Hardened Chromed | Nickel and Chrome Plating Bars |
Roundness | Diameter tolerance / 2 | diameter tolerance / 2 | diameter tolerance / 2 |
Standard Length | -for Ø ≤ 60 mm: 5600 -6200mm -for Ø≥60 mm: 5800 -7200mm Upon request: special lengths on all diameters |
- for Ø ≤ 60 mm: 5600 - 6200 mm - for Ø ≥ 60 mm: 5800 - 7200mm Upon request: special lengths on all diameters |
Up to 6000 mm Upon request: special lengths on all diameters |
Surface Roughness | Ra max. 0.20 µm (statistic average: 0.05-0.15 µm) |
Ra max. 0.20 µm (statistic average: 0.05- 0.15 µm) |
Ra max. 0.20 µm (statistic average: 0.05-0.15 µm) |
Chrome Layer Thickness | min. 900 HV (0.1) |
min. 900 HV (0.1) | min. 25 µm |
Straightness | ≤ Ø16 mm: max. 0.3 mm: 1000 mm > Ø16 mm: max. 0.2 mm: 1000 mm |
≤ Ø16 mm: max. 0.3 mm: 1000 mm > Ø16 mm: max. 0.2 mm: 1000 mm |
max.0.20 mm/1000 mm |
Heat treatment or condition | tensile strength σb Mpa |
yield point σs Mpa |
Elongation or elongation after fracture δ % |
hardness HBW |
Impact absorbed energy KV2 J |
Quenching+tempering | ≥785 | ≥590 | ≥10 | ≤187 | ≥47 |
Medium strength. During cold deformation, it has high plasticity, good low-temperature performance, and acceptable weldability and machinability. Compared with carbon steel with corresponding carbon content, its hardenability is higher, with a critical hardenability diameter of 4-15 mm in oil. However, during heat treatment, it has a tendency to overheat, decarburize sensitivity, and temper brittleness.
It can be used as carburized pinion gears, shafts, steel sleeves, as well as piston pins, crosshead pins, diesel engine sleeves, diesel engine sleeves, valve tappets, shift gear control rods, etc. that do not require high mechanical properties. It is used for manufacturing bolts, screws, nuts, riveted weldments, etc. in hot rolled and normalized conditions. When used as a part with a small cross-section, it can replace 20Cr. It can also be used as quenched and tempered steel, such as cold heading bolts or structural members with larger cross sections
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 drawin
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