NEW-ERA STEEL TUBE HOLDING
NINGBO PIPEWAY TRADE CO.,LTD
| Place of Origin: | CHINA |
|---|---|
| Brand Name: | NEW-ERA |
| Certification: | ISO9001/TS16949 |
| Model Number: | M3-M120 |
| Minimum Order Quantity: | 1000kg |
| Price: | Negotiation |
| Packaging Details: | bundles packing,wooden box packing |
| Delivery Time: | 20-30days |
| Payment Terms: | L/C, T/T |
| Supply Ability: | 2000tons per month |
| 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 | ||
| Highlight: | threaded metal rod,high strength threaded rod |
||
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% |