Steel Square Bar, Steel Bar Square, Square Steel Bars manufacturer / supplier in China, offering A36 Ss400 S45c S20c Hot Rolled Steel Square Bar, China Cold Drawn Steel 1018/1045/4140 Steel Best Price, China Cold Drawn Steel S45c Cold Drawn Bar C45 1045 Steel and so on.
Min. Order / Reference FOB Price | |
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5 Ton | US $1100.00/ Ton |
Local Area: | Laiwu, Shandong, China |
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R&D Capacity: | OEM, ODM, Other |
Payment Terms: | LC, T/T, D/P, PayPal, WesternUnion |
Material: | High Strength Steel |
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Type: | Round Head |
Head Style: | Round |
Thread Bar ASTM A193 B7 & A193 B7M Threaded Rod
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.
Sizes:1/4'' to 4''
1.Know A193 B7 & A193 B7M
1)ASTM A193 is alloy steel bolting material for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
Material according to ASTM A193 B7 is often available in national coarse (UNC) thread pitches, if being used in traditional applications, threads are specified 8 threads per inch (tpi) for diameters above one inch.
2)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.
2.A193 B7 & A193 B7M Raw material chemical composition
ElementB7 / B7M (AISI 4140)Carbon0.38 - 0.48%Manganese0.75 - 1.00%Phosphorus, max0.04%Sulfur, max0.04%Silicon0.15 - 0.35%Chromium0.80 - 1.10%Nickel Molybdenum0.15 - 0.25%
GradeSizesTensile ksi, minYield, ksi, minElong, %, minRA % minHBWHRCA193 B7Up to 2-1/21251051650321 max35 max2-5/8 - 41159516504-1/8 - 6100751850
B7MUp to 4100801850235 max-Over 4 - 7100751850