ASTM A193 Grade B7 is a standard specification for high tensile alloy steel bolting material for use in high temperature or high-pressure service and other special purpose applications. It covers material specification for bolting used in pressure vessel service, valves, flanges and fittings.
We can provide the ASTM A193 B7 stud bolt with 2 ASTM A194 2H nuts,with following different surface treatments
Recommended Nuts,Bolts & Washer
Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications
ASTM A193 Grade B7 stud bolts are high strength fasteners manufactured from a chromium-molybdenum steel and are quenched and tempered.
A193 B7 and B7M shall be heat treated by quenching in a liquid medium and tempering. For B7M fasteners, the final heat treatment, which may be the tempering operation if conducted at 1150 °F [620 °C] minimum, shall be done after all machining and forming operations, including thread rolling and any type of cutting. Surface preparation for hardness testing, nondestructive evaluation, or ultrasonic bolt tensioning is permitted.
Unless otherwise specified, material for Grade B7 may be heat treated by the Furnace, the Induction or the Electrical Resistance method.
The steel shall be produced by any of the following processes: open-hearth, basic-oxygen, electric-furnace, or vacuum-induction melting (VIM). The molten steel may be vacuum-treated prior to or during pouring of the ingot or strand casting. 5.2 Quality—See Specification A962/A962M for requirements
Each alloy shall conform to the chemical composition requirements prescribed in Table 1. 8.2 The steel shall not contain an unspecified element for the ordered grade to the extent that the steel conforms to the requirements of another grade for which that element is a specified element. Furthermore, elements present in concentrations greater than 0.75 weight/% shall be reported.
| C | Mn | Si | P | S | Cr | Mo |
|---|---|---|---|---|---|---|
| 0.37-0.49 | 0.65-1.10 | 0.15-0.35 | 0.035 | 0.04 | 0.75-1.20 | 0.15-0.25 |
B7 stud bolt should have the harndesss Max 321 HB or 35 HRC
Bolts, studs, and stud bolts shall be furnished with nuts, when specified in the purchase order.
Nuts shall conform to Specification A194/A194M
Normally A193 B7 Stud bolts are supplied with A194 grade 2H Hex nuts
The producer of the raw material or finished fasteners shall furnish a certification to the purchaser or his representative showing the results of the chemical analysis, macroetch examination (Carbon and Alloy Steels Only), and mechanical tests, and state the method of heat treatment employed.
Certification shall also include at least the following:
A statement that the material or the fasteners, or both, were manufactured, sampled, tested, and inspected in accordance with the specification and any supplementary requirements or other requirements designated in the purchase order or contract and was found to meet those requirements.
We are a professional manufacturer of Zinc plated with xylan 1424 green PTFE coated A320-L7 Stud bolt in China Stud bolts ASTM A320 Gr L7 […]
Zinc plated with xylan 1424 green PTFE coated A320-L7 Stud bolt Read More »
We are a professional manufacturer of Ceramic Filled Coating Stud Bolt ,Xylar 2 +Xylar 101 coated stud bolt in China
Ceramic Filled Coating Stud Bolt Xylar 2 +Xylar 101 coated stud bolt Read More »
China Professional manufacturer and exporter of Fluorocarbon xylan coating Astm a193 B7 Stud bolts
A193 Grade B7 stud bolts is used for Alloy-Steel and Stainless Steel Bolting Materials for High Temperature or High Pressure Service and Other Special Purpose Applications
PTFE Fluorocarbon xylan 1070 coating Astm a193 B7 Stud bolts Read More »
Hot dip galvanized stud bolt is the A193 B7 Stud bolt with Hot Dip Galvanized according to ASTM A153 standard
Hot dip galvanized A193 b7 stud bolt Read More »
We are a professional manufacturer of ISO 261/ISO 4033 A193 B7 Stud Bolt Full Length Threaded with A194 2H 2 Heavy
Fluorocarbon Fluoropolymer PTFE Xylan 1070 coated A193 B7 Stud bolt
Fluorocarbon Fluoropolymer PTFE Xylan 1070 coated A193 B7 Stud bolt Read More »
Xylan 1424 Coated A193 B7 Stud Bolt,Fluorocarbon Coating is an organic coating consisting of solid lubricant dispersed in an organic binder and dissolved in a specially formulated mixture of solvents
Xylan 1424 Coated A193 B7 Stud Bolt Read More »
We are a professional manufacturer of ASTM A320 Grade L7 Stud bolts in china, which has excellent resistance towards heat,
ASTM A320 L7 Stud bolt with A194 Grade 7 Heavy Hex nuts Read More »
PTFE is short for Polytetrafluoroethylene, a chemical applied to common bolting materials (such as B7 stud bolts) to provide corrosion and
PTFE coated ASTM A193 B7M Stud bolt with 2 A194 2HM hex nuts Read More »
China Professonal manufacturer of PTFE coated ASTM A193 B7 Stud bolt with 2 A194 2H hex nuts.
PTFE is short for Polytetrafluoroethylene, a synthetic fluoropolymer of tetrafluoroethylene. It is widely known by its brand name Teflon which is a chemical applied to common bolting materials (such as B7 stud bolts) to provide corrosion and chemical resistance.
PTFE coated ASTM A193 B7 Stud bolt with 2 A194 2H hex nuts Read More »