Product Description
Round steel with a bright surface and no rolling defects and decarburization layer on the surface. It can be subdivided into peeled, polished, and polished materials. Silver bright steel is used as machine structural steel for various specialized purposes, such as for bolts with strong wear. In addition, such as spindles, piston rods, spokes, and similar components can be used as tool steel in the quenched state.| Material | component | C | Si | Mn | P | S | Cr | Ni | Cu |
| 1320/SMn420/20Mn6/1.1169/20Mn2 | 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 |
Commodity | Bright round steel/chrome plated rod | |
Grades | Carbon steel | SAE 1018 , A36, SS400, S235JR, Q235, SAE 1020, S20C , 1.0402, 20GB, CK22, SAE 1045 ,S45C, C45, CK45, EN8 ,1.1191 |
Alloy steel | SAE 5120 , 20Cr, Scr 420H, 20Cr4, SAE 5140 , 40Cr,SCr440, 520M40, SAE 4130 , 30CrMo, SCM430, SCM420, SAE 4140 , 42CrMo4, EN19, SCM440, 708A42, 708M40, SAE 4340, 40CrNiMoA,871M40 , SNCM439 | |
Length | 4-12m random length or as per request fixed length | |
Surface | Bright, or chromate treatment as per required | |
Packing | Wrapped by plastic clothes and steel strips | |
Delivery Condition | BK, BKW, GBK, NBK | |
Container Size | 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) 40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) 40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High) | |
Application | hardware tools, auto parts, standard parts, fasteners common shaft, machinery manufacturing, light industry, hardware, bicycles, cars, motorcycles, textile machinery, transformers and other machinery industry. | |
Advantages | greater size accuracy, straightness and increased tensile and yield strength as well as improved machinability | |
MOQ | 1 tons | |
| Material | Diameter of sample d mm | Heat treatment or condition. | Tensile strength σb Mpa | Point of yield σs Mpa | Ratio of elongation δ % | Reduction of section ψ % | hardness HBW | Shock absorption energy KV2 J |
| ASTM 5115 45Cr | d=15 | Quenching + tempering | ≥735 | ≥490 | ≥11 | ≥45 | ≤179 | ≥55 |
| ASTM 5120 20Cr | d=15 | Quenching + tempering | ≥835 | ≥540 | ≥10 | ≥40 | ≤179 | ≥47 |
| ASTM 5130 30Cr | d=25 | Quenching + tempering | ≥885 | ≥685 | ≥11 | ≥45 | ≤187 | ≥47 |
| ASTM 5135 35Cr | d=25 | Quenching + tempering | ≥930 | ≥735 | ≥11 | ≥45 | ≤207 | ≥47 |
| ASTM 5140 40Cr | d=25 | Quenching + tempering | ≥980 | ≥785 | ≥9 | ≥45 | ≤207 | ≥47 |
| ASTM 5145 45Cr | d=25 | Quenching + tempering | ≥1030 | ≥835 | ≥9 | ≥40 | ≤217 | ≥39 |
| ASTM 4119 | d=30 | Quenching + tempering | ≥410 | ≥265 | ≥24 | ≥60 | ≤179 | ≥110 |
| ASTM 4130 | d=25 | Quenching + tempering | ≥930 | ≥785 | ≥12 | ≥50 | ≤229 | ≥63 |
| ASTM 4317 | d=25 | Quenching + tempering | ≥980 | ≥835 | ≥12 | ≥45 | ≤229 | ≥63 |
| ASTM 4140 | d=25 | Quenching + tempering | ≥1080 | ≥930 | ≥12 | ≥45 | ≤217 | ≥63 |
| GB38CrMoAI/ JIS SCM645 | d=30 | Quenching + tempering | ≥980 | ≥835 | ≥14 | ≥50 | ≤229 | ≥50 |
| ASTM 6150 | d=25 | Quenching + tempering | ≥1280 | ≥1130 | ≥10 | ≥40 | ≤255 | d=25 |
| ASTM 4142 | d=25 | Quenching + tempering | ≥980 | ≥785 | ≥10 | ≥45 | ≤217 | ≥63 |
Widely used in cylinders, piston rods in cylinders, plastic machinery packaging machinery, printing machinery, textile machinery, conveying machinery, engineering machinery, woodworking machinery, shoemaking machinery, inkjet printing machines, automatic cutting machines, and other types of machinery for the conduit, guide rod, linear optical axis.
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 2023, 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