| 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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Audited Supplier 
Alloy steel is called alloy steel when other alloy elements are added in addition to iron and carbon. An iron carbon alloy formed by adding one or more alloy elements on the basis of ordinary carbon steel. According to the different elements added and the appropriate processing technology, high strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, non-magnetic and other special properties can be obtained.
| component | C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
| minimum value | 0.37 | 0.17 | 0.7 | - | - | - | - | - | 0.25 |
| maximum value | 0.44 | 0.37 | 1 | 0.035 | 0.035 | 0.25 | 0.3 | 0.25 | 0.45 |
| Diameter (thickness) d mm |
Heat treatment or condition | tensile strength σb Mpa |
Yield point σs Mpa |
Elongation δ % |
hardness HBW |
| D=25 (sample size) | Normalizing or quenching+tempering | ≥590 | ≥355 | ≥17 | Steel without heat treatment ≤229 |
| Annealed steel ≤207 |
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| 1.For steel with diameter or thickness less than 25 mm, the heat treatment is carried out on the sample blank with the same section size as the finished product. 2.The recommended heat preservation time for normalizing in the table shall not be less than 30min, with air cooling; Recommended holding time for quenching shall not be less than 30min, 70, 80 and 85 steel shall be oil cooled, and other steel shall be water cooled; The recommended holding time for tempering shall not be less than 1h. 3.See the first row of the table for the data of delivery hardness HBS10/3000 of non heat treated steel in delivery status; The hardness of annealed steel HBS10/3000 is shown in the second row of the table 4.Heat treatment of steel sample: normalizing temperature 860 ° C; Quenching temperature 840 ° C, tempering |
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| Material Science: | Hot rolled/cold drawn/forged steel round steel |
| Process: | It is forged from vacuum degassed steel ingot. |
| Diameter: | 25mm - 1000mm (optional) |
| Length: | 1000mm-12000mm Straightness:3mm/M max(optional) |
| Process: | EAF+LF+VD+forging+heat treatment (optional) |
| Delivery conditions: | Hot forging+rough machining (black surface after Q/T)+double tempering. |
| Delivery time | 15-25 days |
| Minimum order quantity: | 5 tons |
| Heat treatment: | Normalizing/annealing/quenching/tempering (optional) |
| Technical data: | Chemical composition, physical properties and mechanical tests according to customer requirements |
| characteristic: | According to your requirements |
| Test: | Ultrasonic test according to SEP 1921-84 C/c and D/d (optional) |
| Tag: | Grade, heat resistant NO The length will be printed with the required color on each bar |
| Payment: | T T 30% in advance; The balance shall be paid against shipping documents or irrevocable letter of credit at sight before shipment |
| Terms of trade | FOB,C&F,EXW... |
Hardenability is slightly higher than 40 steel. Strength and hardness after quenching and tempering treatment The toughness is slightly higher than that of 40 steel, the cold deformation plasticity is medium, the machinability is good, the weldability is low, it has overheating sensitivity and temper brittleness, and it is easy to crack after water quenching. It is used to manufacture parts bearing fatigue load, such as shafts, crankshafts, connecting rods, rollers, screws and nuts working under high stress. This standard is applicable to high-quality carbon structural steel bars with diameter or thickness no more than 250mm. Through negotiation between the supplier and the supplier, high-quality carbon structural steel bars with diameter or thickness greater than 250mm can also be provided.
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
Suppliers with verified business licenses
Audited Supplier 
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