grade quenched and tempered qt steel round bar

grade quenched and tempered qt steel round bar

  • grade quenched and tempered qt steel round bar
  • grade quenched and tempered qt steel round bar
  • grade quenched and tempered qt steel round bar
  • grade quenched and tempered qt steel round bar
  • grade quenched and tempered qt steel round bar
Model No.: iso 898 grade 8.8
Min. Order: 5 Metric Ton
Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Transportation: Ocean,Land,Air
Productivity: 3000 tons per month
Packaging: Anti-rusty standard seaworthy
Delivery Time: 30 Days
Place of Origin: Shandong Provnce, China
Brand: LE REN
Supply Ability: 3000 tons per month
Certificate: ISO 9001

Product Description

Grade 8.8 round bars

ISO grade 8.8 is one kind of alloy quenched and tempered grade in ISO898 standard which is similar to US grades 8 and B7.

Grade 8.8 round bars we supply has following advantages:
Smoth surface: 
For both hot rolled and cold drawn steel bars
Good straightness: 
0.5mm/m for cold drawn bars and 1mm/m for hot rolled bars
Precision size tolerance: 
h9 - h11 for cold drawn steel bars
Customized length: 
12ft, 6000mm or other cutting length
Standard mechanical proeprties: 
According to ISO GRADE 8.8 bolt material
Uniformed hardness: 
On whole bars
Anti-rusty packages: 
Film wrapped inside, Nylon plastic bag wrapped outside with belt
Competitive price: 
grade 8.8 round bars with most competitive price
Large quantity stock: 
Stock of Diameters such as M12, M16, M18, M20, M22, M24, M25, M27, M28, M30, M32, M34, M35, M36, M38, M40, M42, M45, M48, M50, M52, M55, M56, M58, M60, M64, M65, M70, M72, M74, M75, M80 anchor bolts round bars
Fast delivery: 
Within two weeks for stocks
Professional service: 
Packing, color painting, cutting, Chamferring, Exporting, Documentary etc.

Any other requirements on products and service, welcome to tell us. Your requirements push us to improve.
Following is Grade 8.8 bolt material specification:
1. Grade 8.8 material equivalent

40Cr 41Cr4 AISI5140 SAE5140 SCr440

2. Chemical compiosition of grade 8.8 material

0.38-0.43 0.15-0.35 0.70-1.00 0.035(MAX) 0.035(MAX) 0.80-1.10

3. Grade 8.8 material mchanical properties

Grade 8.8 material Yield Strength(MPa) Grade 8.8 material Tensile Strength(MPa) Grade 8.8 material Elongation (%) Grade 8.8 material Reduction of area Grade 8.8 material Hardness(HRC)
660(min) 830(mIn) 12%(min) 50%(min) 32(max)

5. Production line:

Qt Bar

6. Production Facilities:

Heat Treatment

7. Inspection:


8. Package:


9. RFQ:

Q1. Are you a manufactuer?
A1:Yes, we have our own factory and labatory to produce and inspect products. 

Q2. How to ensure that every process's quality?

A2:Every process will be checked by our quality inspection department which insures every product's quality. we will personally go to tIn the production of products,he factory to check the quality of products.

Q3.How long is your delivery time?
A3:Our delivery time is generally 30 to 45 days. Or according to the quantity.

Q4. What is your payment method?
A4:30% value of T/T in advance and other 70% balance on B/L copy.
Q5.Can you provide a sample?
A5:Sure, Our sample is provided free of charge, but not including courier fees
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