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Model No.: Gr8.8
Brand: LE REN
Standard: Aisi, Astm, Bs, Din, Gb, Jis
Place Of Origin: China
Production Process: Cold Drawn
Application: Structural Steel Bar, Die Steel Bar, Tool Steel Bar
Whether Alloy: Is Alloy
Special Steel: Cold Heading Steel
Species: Alloy Steel Bar, Carbon Steel Bar
Tolerance: ±1%
Processing Service: Cutting
Packaging: Carton + Wooden Box
Productivity: 50000 tons
Transportation: Ocean,Land,Air,Express,Express
Place of Origin: China
Supply Ability: 3000 pices per month
Certificate: ISO9001
HS Code: 72283090
Port: Qingdao,Shanghai,Tianjin
Payment Type: D/A
Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,DDP,DDU,Express Delivery
iso Gr8.8 Qt Steel Round Bar
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. ISO gr 8.8 qt steel round bar we supply is mainly used to produce iso grade 8.8 Threaded Rods. In China, the gr8.8 qt steel round bar raw material is 40Cr to gr8.8 qt steel bar. We can supply 40Cr to Gr8.8 hot rolled qt steel round bar and 40Cr to Gr8.8 cold drawn qt steel round bar. iso grade 8.8 steel rod is to produce iso grade 8.8 High Strength Steel Bolts and fully threaded stud bolts.
1. gr8.8 threaded rods raw material 40Cr or 5140 chemical composition:
| C | SI | MN | S | P | CR |
| 0.38-0.43 | 0.15-0.35 | 0.50-0.90 | 0.035(MAX) | 0.035(MAX) | 0.75-1.20 |
2. iso gr8.8 qt steel bar mechanical properties:
| Tensile strength | Yield strength | Elongation | Reduction of area | Hardness |
| 830 | 660 | 12 | 54 | 32 HRC MAX |
Note: The properties can adjust according to your requirements
3. iso grade 8.8 qt steel round bar sizes:
DIAMETER: M8 - M100
LENGTH: 1M, 2M ,3M, 6M or cut to samll length pieces
| M12 | M36 |
| M14 | M39 |
| M16 | M42 |
| M18 | M45 |
| M20 | M48 |
| M22 | M52 |
| M24 | M56 |
| M27 | M60 |
| M30 | M64 |
| M33 | |
4. gr8.8 Metric threaded rod weight:
M12
0.69kg
M36
6.63kg M14
0.93kg
M39
7.86kg
M16
1.24kg
M42
9.05kg
M18
1.57kg
M45
10.51kg
M20
1.98kg
M48
11.84kg
M22
2.44kg
M52
14.13kg
M24
2.86kg
M56
16.37kg
M27
3.58kg M60
19.00kg
M30
4.54kg M64
21.21kg
M33
5.61kg
5. Gr8.8 qt steel round bar non-mettalic inclusion:
| A | B | C | D | |
| MAX | MAX | MAX | MAX | |
| Thin | 2.5 | 2.0 | 0.5 | 0.5 |
| Thick | 1.5 | 1.0 | 1.0 | 1.0 |
7. Gr8.8 qt steel round bar grain straightness:
iso gr 8.8 hot rolled and qt steel round bar: 2mm/m max
iso gr8.8 cold drawn and qt steel round bar: 1mm/m
Product Categories : Heat Treated Steel Bar And Tube > Quenched And Tempered Steel Bar
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