Hardened& tempered steel strip

Heat Treatment Spring Steel Strip

Hardening and Tempering is a thermal process that strengthens steel strips through a controlled heating and cooling process. The hardening process involves heating the steel strip to above the critical transformation temperature for the given grade and then rapidly cooling. The steel strip in this condition is extremely brittle and requires further treatment in the tempering. Then strips are reheated to a lower temperature and holding it at the given temperature for a given period of time. This process is done in an inert atmosphere to avoid oxidation. This type of steel strip has high degree of toughness and has excellent spring properties.

Product Detail

Product Tags

* Basic Info

Steel Grade: CK67,65Mn,SAE1075,SK5,SKS51 Etc.
Thickness: 0.20mm -- 3.50mm
Width: 8.0mm -- 400mm
Edge treatment: slit edge,round edge etc.
Applications: To be used in making saw blades,cutting tools,hardware,auto-clutches etc.
Steel Strip Suface Treatment: Bright Annealed,Grey Blue,White Polished,Blue Polished,Yellow Polished
Sea-worthy Packing Method: Step 1#: Each coil is covered by moderate high quality anti-rust oil.
Step 2#: Inside of each coil is wrapped by oil paper or plastic film.
Step 3#: Outside of each coil is closely covered by compound paper or sack cloth.
Step 4#: Each coil will be again firmly packed outside by steel strapping or PET strapping.
Step 5#: On/about 500KGS--1000KGS to be packed with one iron pallet or ply-wood pallet.
Special remarks: For Full 20'GP shipment,it can be loaded with total G.W.no more than 27,000KGS
For LCL shipment,we can arrange to deliver them to any seaport in China for consolidation.
Customer's special requirements can be considered if possible.

* Product Description


Material Grade CK50,CK67,CK75, CK95,51CrV4,75Cr1 ,SK5, SAE1070,SAE1074,C67S ,C75S etc.
Condition hardened and tempered, cold rolled annealed
Hardness 18-55HRC
Surface polish-blue,gery-blue,polished bright,golden etc.
Thickness 0.08-4 mm
Width 3-1500 mm
Tolerance thickness+/-0.01mm max,width +/-0.05mm max
Tensile strength 540-1575N/mm2

* Application:

A. Rolling shutter door spring steel strip
B. Band saw blade
C. Packing steel strapping
D. Stampings, clips
E. wiper blade
F. Construction tools

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* Advantatges:

1. Slitting--Steel strips can be cut into pieces of steel sheets and length is up to end user's request,such as 1m,2m,3m, etc.

2. Strict Control--Steel strips are inspected strictly in material composition,size,hardness,tensile strength,etc to meet customer's request.

3. Materials--First-rate crude materials purchase from ISO certificated state-own enterprise to guarantee superior quality.

4.Thickness and width tolerance -- special tolerances can be made according to your request.

Packing details: Each bundle with anti-rust paper and light oil, then wrapped in plaster film and put in 20ft container for standard sea worthy.

Delivery Details: 20-30 days after receiving the advance payment.

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* Certificate:

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* Our Advantage:

1. Long Experience: 10years of warehousing and sales experience.
2. High and consistent quality, quantity is with preferential treatment.
3. Strong Ability to supply and Short Delivery Time: Warehouse is located around office, so according to the quantity of the order, the goods can release quickly.
4. Transportation Speed is quick.Near to Shanghai port.
5. Many Exporting Countries:Products have already been exported to the United States, Australia, Russia, Ukraine,Pakistan,Korea and other countries.
6. Reliable Suppliers:All company products are from large domestic steel mills, including: Shandong Iron and Steel, Tangshan Iron and Steel, Handan Iron and Steel and so on.
7. Strong Partners: Chinese Government, State-owned Enterprises, Listed Enterprises are all partners of the company.
8. Bottom and competitive Price
9. Reliable Quality and Service
10. Buyer's Specifications Accepted


Q1. What are your company's main products ?
A1: Our main products are steel plate/sheet, coil,Rolling shutter door spring, spring box, Cuting blade.

Q2. How do you control quality ?
A2: Mill Test Certification is supplied with shipment, Third Party Inspection is available. and we also get ISO, SGS, Alibaba.Verified.

Q3. What are the advantages of your company ?
A3: We have many professionals, technical personnel, more competitive prices and best after-dales service than other steel companies.

Q4. How many coutries you already exported ?
A4: Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt, Turkey, Jordan,India, etc.

Q5. Can you provide sample ?
A5: We can provide the samll samples in stock for free, as long as you contact us.
Customized samples will take about 3-5days.

*Note: If you have any question, please feel free to click “Contact Supplier” as below,we will get back to you immediately.

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