Alloy Steel Large Threaded Rod , ASTM A320 L7 Forged Double End Threaded Rod
Basic Properties
Place of Origin:
CHINA
Brand Name:
NEW-ERA
Certification:
ISO9001/TS16949
Model Number:
M3-M60
Trading Properties
Minimum Order Quantity:
1000kg
Price:
Negotiation
Payment Terms:
L/C, T/T
Supply Ability:
2000tons per month
Product Summary
ASTM A320 L7 Full Threaded steel Rod ASTM A320 L7 Alloy Steel threaded rods The ASTM A320 specification covers alloy steel and stainless steel bolting materials for low temperature service. This standard covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts used for ...
Product Details
Highlight:
threaded metal rod
,high tensile threaded rod
Standard:
ASTM A320 L7
Material:
Stainless Steel,alloy Steel,carbon Steel,Brass,etc.
Size:
Can Be Customized,M3-M100,Cusomized,M3-M48
Finish:
Plain,black,Zinc Plated,dacromet
Name:
Stainless Steel Threaded Rods(studdings),stainless Steel Threaded Rod,Bolts,M42 M45 Stainless Steel Fasteners Full Threaded Rod And Bolt
Surface Treatment:
Nickel,Dacromet,Nickel-plated,Chrome
Class:
ASTM A 320 L7 Gr.B7, Gr.B7M, B16,Gr.B8, Gr.B8M
Product Description
ASTM A320 L7 Full Threaded steel Rod ASTM A320 L7 Alloy Steel threaded rods
The ASTM A320 specification covers alloy steel and stainless steel bolting materials for low temperature service. This standard covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts used for pressure vessels, valves, flanges, and fittings.
1. Specifications and materials
| dentification | L7, L7M, L70 | L7A, L71 | L7B, L72 | L43 |
| Grade | Chromium- Molybdenum (AISI 4140, 4142, or 4145) |
Carbon- Molybdenum (AISI 4037) |
Chromium- Molybdenum (AISI 4137) |
Nickel-Chromium- (AISI 4340) |
2. Chemical composition of A320 L7 steels.:
| Element | L7 (AISI 4140) | L43 (AISI 4340) | B8 (AISI 304) | B8M (AISI 316) |
| Carbon | 0.37 - 0.49% | 0.38 - 0.43% | 0.08% max | 0.08% max |
| Manganese | 0.65 - 1.10% | 0.75 - 1.00% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.04% | 0.04% | 0.05% | 0.05% |
| Sulfur, max | 0.04% | 0.04% | 0.03% | 0.03% |
| Silicon | 0.15 - 0.35% | 0.15 - 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.75 - 1.20% | 0.70 - 0.90% | 18.0 - 20.0% | 16.0 - 18.0% |
| Nickel | 1.65 - 2.00% | 8.0 - 11.0% | 10.0 - 14.0% | |
| Molybdenum | 0.15 - 0.25% | 0.20 - 0.30% | 2.00 - 3.00% |
3. Mechanical properties of A320 L7,L7ML43 and so on..
| Grade and Class | Diameter | Heat Treatment | Tensile Str Min KSI |
Yield Str 0.2% Offset KSI |
Elongation in 2in. Min, % |
Reduction of Area Min, % |
Hardness max |
| FERRITIC STEELS | |||||||
| L7, L7A, L7B, L7C, L70, L71, L72, L73 |
2-1/2" and under | quench and tempered | 125 | 105 | 16 | 50 | |
| L43 | 4" and under | quench and tempered | 125 | 105 | 16 | 50 | |
| L7M | 2-1/2" and under | quench and tempered @ 1150F, min |
100 | 80 | 18 | 50 | 235 HB / 99HRB |
| L1 | 1" and under | quench and tempered | 125 | 105 | 16 | 50 | |
| AUSTENTIC STEELS | |||||||
| CLASS 1: B8, B8C, B8M, B8P, B8F, B8T, B8LN, B8MLN |
ALL | carbide solution treated | 75 | 30 | 30 | 50 | 223 HB or 96 HRB |
| CLASS 1A: B8A, B8CA, B8MA, B8PA, B8FA, B8TA, B8LNA, B8MLNA |
ALL | carbide solution treated | 75 | 30 | 30 | 50 | 192 HB or 90 HRB |
| CLASS 2: B8, B8C, B8P, B8F, B8T |
3/4" and under | carbide solution treated and strain hardened |
125 | 100 | 12 | 35 | 321 HB or 35 HRC |
| over 3/4 to 1" incl | 115 | 80 | 15 | 30 | 321 HB or 35 HRC | ||
| over 1" to 1-1/4" incl | 105 | 65 | 20 | 35 | 321 HB or 35 HRC | ||
| over 1-1/4" to 1-1/2" incl | 100 | 50 | 28 | 45 | 321 HB or 35 HRC | ||
| CLASS 2: B8M | 3/4" and under | carbide solution treated and strain hardened |
110 | 95 | 15 | 45 | 321 HB or 35 HRC |
| over 3/4 to 1" incl | 100 | 80 | 20 | 45 | 321 HB or 35 HRC | ||
| over 1" to 1-1/4" incl | 95 | 65 | 25 | 45 | 321 HB or 35 HRC | ||
| over 1-1/4" to 1-1/2" incl | 90 | 50 | 30 | 45 | 321 HB or 35 HRC |
4. Sizes we can also for full Threaded rods: 1/4‘’ to 4‘’
5. MOQ: Normally we don't have any MOQ requirements, because we produce threaded rods for big quantity every month
6. Delivery time : 7-30 days upon to the sizes & quantity.
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