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[China]
Address: Room 1703, 17th Floor, Building 5, Jinyin Modern City, Guangdian South Road, Jinshui District, Zhengzhou City, Henan Province, China.
Contact name:Vicky
Zhengzhou Huitong Pipeline Equipment Co.,Ltd. |
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PTFE galvanized Alloy Steel fasteners hex bolt hex nut flat washer
1. What is the definition of alloy steel bolts?
Alloy steel bolts are made from a high strength steel alloy and are further heat treated. Alloy steel bolts are typically not plated, resulting in a dull black finish. Alloy steel bolts are extremely strong but very brittle.
Our common alloy steel material grade is ASTM A193 B7, B7M, ASTM A320 L7, ASTM A325, for bolts; ASTM A194 2H, 2HM for nuts; ASTM F436 for gaskets.
2. Alloy steel bolt nut washer dimension:
| Product Name | Alloy steel Mushroom head Fasteners screws |
| Available Material | 1. STAINLESS STEEL SS201, SS303, SS304, SS316, SS410, SS420 2. CARBON STEEL C45(K1045), C46(K1046),C20 3. IRON 1010, 1035, 1045 4. ALUMINIUM OR ALLOY AL6061, AL6063, AL7075 ETC 5. BRASS H59, H62, COPPER and BRONZE |
| Grade(Hardness) | 4.8, 8.8, 10.9, 12.9 |
| Thread Type | UNC, UNF, UNEF, UNS and UN Series |
| Surface Treatment | Plain, Zinc-plated, Yellow Zinc-plated, Black Zinc-plated, Brass-plated, Nickel-plated, Trivalent Chromium Plated, Hexvalent Chromium Plated, Cadmium-plated, Geomet, Dacromet, HDG, Nylok, Black-oxide, Phosphatizing, Powder Coating and Electrophoresis |
| Standard | ISO, DIN, ANSI, JIS, BS and Non-standard as clients' requirements |
| Certificate | GB/T19001-2008/ISO9001:2008 Match ROHS and Eco-friendly |
| Size Range | As per customers' requirement |
| Manufacturing Process | Cold Heading/Tapping/Heat Treatment/Surface Treatment |
| Sample | Free excluding freight |
| Lead Time | 20-30 days after order confirmed(Reception of Deposit Payment or L/C Original) |
| Packaging | Normal neutral packaging------PP bag inner, A=A corrugated carton, pallet w/slatted crate |
3. The difference between alloy material grade:
| Standard / Material grade | C | Mn | P | S | Si | Cr | Mo | Al | V |
| ASTM A193 B7 (Cr- Mo AISI 4140,4142,4145 ) | 0.37-0.49 | 0.65-1.10 | 0.035 Max | 0.04 Max | 0.15-0.35 | 0.75-1.20 | 0.15-0.25 | – | – |
| ASTM A1193 B7M (Cr- Mo AISI 4140,4142,4145 ) | 0.37-0.49 | 0.65-1.10 | 0.035 Max | 0.04 Max | 0.15-0.35 | 0.75-1.20 | 0.15-0.25 | – | – |
| ASTM A193 B16 (Cr- Mo -V ) | 0.36-0.47 | 0.45-0.70 | 0.035 Max | 0.04 Max | 0.15-0.35 | 0.80-1.15 | 0.50-0.65 | 0.015Max | 0.25-0.35 |
| ASTM A193 B5 (5% Cr AISI 501) | 0.10 max | 1.00 max | 0.040 max | 0.030 Max | 1.00 Max | 0.40 -6.00 | 0.40 -0.65 | – | – |
| ASTM A320-L7 (Cr- Mo AISI 4140,4142,4145 ) | 0.38-0.48 | 0.75-1.00 | 0.035 Max | 0.04 Max | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 | – | – |
| ASTM A 320 L7M | 0.38-0.48 | 0.75-1.00 | 0.035 Max | 0.04 Max | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 | – | – |
| ASTM A194 Gr.2H | 0.40 Min | 1.00 Max | 0.040 Max | 0.050 Max | 0.40 Max | – | – | – | – |
| ASTM A194 Gr.2HM | 0.40 Min | 1.00 Max | 0.040 Max | 0.050 Max | 0.40 Max | – | – | – | – |
| ASTM A194 Gr.4 | 0.40-0.50 | 0.70-0.90 | 0.035 Max | 0.04 Max | 0.15 – 0.35 | 0.20 – 0.30 | – | – | – |
4. Alloy steel bolt nut washer common surface treatment:
