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Brand Name : NEW-ERA
Model Number : M3-M120
Certification : ISO9001/TS16949
Place of Origin : CHINA
MOQ : 1000kg
Price : Negotiation
Payment Terms : L/C, T/T
Supply Ability : 2000tons per month
Delivery Time : 20-30days
Packaging Details : bundles packing,wooden box packing
Standard : ASTM A320 A193
Material : Stainless Steel,alloy steel,carbon steel
Size : can be customized,M3-M100,Cusomized,M3-M48
Finish : Plain,black,Zinc plated,dacromet
Grade : SAE1010 SAE1020 SAE1045
Surface treatment : Nickel,Dacromet,Nickel-plated,Chrome
Class : ASTM A 320 L7 Gr.B7, Gr.B7M, B16,Gr.B8, Gr.B8M
SAE1010 SAE1020 SAE1045 4130 4140 Plain Black Galvanized threaded steel Rod , znic plated threaded rod
ASTM A193 Grade B7M bolts and studs are identical in chemistry to Grade B7 (quenched and tempered medium carbon alloy steel), but have lower strength requirements and require 100% hardness testing of all fasteners manufactured in the lot. Grade B7M bolts resist chloride, sulfide, and hydrogen stress corrosion cracking (SCC) and are frequently used in sour gas service.
Our main grades for threaded ros:
ASTM A193: B7, B7M, B16, B8 class 1, B8 class 2, B8M class 1, B8M class 2, B8T etc.
ASTM A320: L7, L7M, L43, B8 class 1, B8 class 2, B8M class 1, B8M class 2, B8T etc.
Our supplied sizes:1/2"-4"
Surface finish: Self black, Blacken,Zinc-coated, GI and so on
Property in A193 B7 and B7M
Grade | Sizes | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min | HBW | HRC |
A193 B7 | Up to 2-1/2 | 125 | 105 | 16 | 50 | 321 max | 35 max |
2-5/8 - 4 | 115 | 95 | 16 | 50 | |||
4-1/8 - 6 | 100 | 75 | 18 | 50 |
Grade | Diameter | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min | HBW | HRC |
B7M | Up to 4 | 100 | 80 | 18 | 50 | 235 max | - |
Over 4 - 7 | 100 | 75 | 18 | 50 |
Steel materials 4140 chemical composition
Element | B7 /B7M (AISI 4140) |
Carbon | 0.38 - 0.48% |
Manganese | 0.75 - 1.00% |
Phosphorus, max | 0.04% |
Sulfur, max | 0.04% |
Silicon | 0.15 - 0.35% |
Chromium | 0.80 - 1.10% |
Nickel | |
Molybdenum | 0.15 - 0.25% |
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4130 / 4140 Threaded Metal Rod , SAE1010 / SAE1020 / SAE1045 Hollow Threaded Rod Images |