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45# hot rolled steel bars
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45# hot rolled steel bars
Product introduction
The recommended heat treatment system for 45 steel specified in the GB/T699-1999 standard is normalizing at 850°C, quenching at 840°C, and tempering at 600°C. The achieved performance is yield strength ≥355MPa
The GB/T699-1999 standard stipulates that the tensile strength of 45 steel is 600MPa, the yield strength is 355MPa, the elongation rate is 16%, and the reduction of area is 40%.
Application
No. 45 steel is widely used in machinery, when it is not heat treated: HB≤229; heat treatment: normalizing; impact energy: Aku≥39J; high strength, good plasticity and toughness, 45# steel plate after quenching without tempering, the hardness is greater than HRC55 (Up to HRC62) is qualified. After heat treatment and tempering, it can reach HRC42-46, which can not only ensure its good mechanical properties, but also obtain the hardness requirements of the surface. It is used to make small section adjustments that can withstand larger loads. Quality parts and large normalized parts with less stress, as well as surface hardened parts that do not require high core strength, such as tips, guide posts, watch hands and other components.
Product parameters
| Material: | forged square steel bar |
| Diameter: | 100mm-1000mm |
| Length: | 2000mm-12000mm Straightness: 3mm/M max; square bar.100-1000mm, blocks sizes up to 800*1000mm |
| Process: | EAF + LF + VD + Forged + Heat Treatment (optional) |
| Delivery condition: | Hot forged +Rough machined (black surface after Q/T)+ Turned (optional) |
| Delivery Time: | 7-15 days |
| MOQ: | 20 tons |
| Heat treatment: | Normalized / Annealed / Quenched / tempered |
| Forged ratio: | no less than 3:1 |
| Technical Data: | According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing |
| Test: | Ultrasonic test according to SEP 1921-84 G3 C/c |
| Marking: | Grade, heat NO. length will be stamped one each bar with required color |
| Payment: | 30% advance by TT; Balance pay before the shipment against shipping documents or irrevocable LC at sight |
| Application: | Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears. |
Technical data
| Grade | Dia(mm) | C | Si | Mn | P | S | Ni | Cu | Cr |
| 20 | 18-600 |
0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 | ≤0.25 |
| 45 | 20-600 | 0.42-0.50 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 | ≤0.25 |
Mechanical properties
| Yield strength σs/MPa (>=) | Tensile strength σb/MPa (>=) | Elongation δ5/% (>=) |
Reduction of area ψ/% (>=) |
Hardness HBS |
| ≥355 | ≥600 | ≥16 | ≥40 | ≤197 |
Features of C45 steel
1, Medium carbon structural steel
2, High strength and machinability
3, Good toughness, plasticity and abrasion resistance
4, Typically used in quenched and tempered or normalized conditions
4,Typical Applications
1, Widely used in machine manufacturing
2, For shaft parts
3, Stamping die drawing parts repair and hardfacing
Factory video
Shandong Mingding Supply Chain Management Service Co., Ltd. was established in 2013, focusing on the production, processing and trade of metal materials. We have a professional team to provide quality service, we sincerely welcome customers at home and abroad to visit our company for guidance and long-term cooperation.
Warehouse storage
The company has the most advanced production equipment and automatic control system, to ensure the most reliable product quality. In addition, we also have a professional international trade and logistics team. With quality products and excellent service, we have established a large number of long-term customers all over the world.
Packing and delivery
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
Production Technology
Our main products include high quality carbon steel, stainless steel products,galvanized steel products, aluminum and copper. We can also provide cutting, punching, bending, polishing, shearing, wire drawing and other related service.
Honor
Application
Our company is set production processing and trade as one. The company has the most advanced production equipment and automatic control system, to ensure reliable product quality and sufficient supply capacity. Our main products are stainless steel, silicon steel, galvanized steel, carbon steel, aluminum products and other series. Applicable to engineering, coal mining, shipping, aviation, boiler, machinery, military and other fields. We sincerely welcome customers from all over the world to visit our company to discuss long-term cooperation.
Architectural field
Architectural field
Automotive field
Automotive field
Aviation field
Aviation field
Chemical industry field
Chemical industry field
FAQ
How do you package the product?
The inner layer is covered with waterproof paper, packed in iron and secured by fumigated wooden brackets. It can effectively protect products from corrosion in the process of sea sample transportation.
Are the products inspected before shipment?
Of course. All our products go through strict quality tests before they are packed. Those that fail will be destroyed.
Can I visit your factory?
Of course. We welcome customers from all over the world to visit our factory.
What certifications have your products passed?
We have ISO 9001, SGS, EWC and other certifications.
Can you provide samples?
Of course, we can send samples all over the world. Our samples are free of charge, but the customer needs to bear the Courier charge
What is the loading port?
Normally, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. You can choose other ports according to your needs.
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Message
Add：Shan Gang Building, 61-11 South Gongye Road, Jinan Area, China (Shandong) Pilot Free Trade Zone
MD Steel
Message
info@mingdingsteel.com
+8615553113555