|
[China]
Trade Verify
Address: No.101 Shijing East Road, Tudian Town, Tongxiang, China
Contact name:Denny
NEW-ERA STEEL TUBE TECHNOLOGY CO.,LTD |
|
Verified Suppliers
|
|
|
Stainless threaded rods 304 201 202 410 304L 316L Plain Blackthreaded steel Rod , znic plated threaded rod
| Standard | DIN, ASTM,BSW |
| Surface Treatment | Zinc Plated, HDG,Black, Plain |
| Property Class | grade 4.8 8.8, 10.9 |
| Material | Carbon Steel,Stainless Steel |
| Length | 1Meter,2Meter,3Meter,4Meter |
| Diameter | M6 to M52 3/16 to 2-1/2 |
| Sample | Free |
| Thread | Metric Coarse, Metric Fine, UNC, UNF, BSW, BSF |
| Packing | Paper tube packing, PVC bundle packing |
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% |
