We are the professional manufacturer and exporter of FCC PTFE Xylan 1070 coated A193 B7 Stud bolt in China,Xylan 1070 coated Stud Bolts
Fluorocarbon Coating (PTFE, Xylan, Teflon )
Fluorocarbon Coating is an organic coating consisting of solid lubricant dispersed in an organic binder and dissolved in a specially formulated mixture of solvents. It is also corrosion-resistant due to the use of a thermally cured thermosetting synthetic binding material. When applied to the substrates it resists galling, seizure and fretting and offers corrosion resistance.
XYLAN coatings were originally developed out of fluroplastics (PTFE, etc ) but with continued development of polymers that can be used as binder systems and adhesion promoters , the performance of coatings has improved considerably .
Xylan® 1070 is a low friction coating with high corrosion resistance to oxidation and high temperatures. Similar to Xylan® 1427, this PTFE coating is ideal for leak prevention for tanks, valves, vessels, etc. in harsh environments.
XYLAN 1070
• Its basic use is for fasteners in marine use, in particular for drilling platform construction in the north sea . its main features are that it combines good corrosion protection with dry lubrication. The main benefits are:- significantly reduced torque required for a given pre- load.
• Much greater accuracy of pre- load for a given applied torque.
• Good protection against salt water corrosion ease of break – out of nuts (prevention of nut seizure) leading to ease of maintenance.
XYLAN 1070 coated Stud bolt production procedure
STEP ONE: Applying a base-coat such as Zinc-plating, Zinc-Nickel. The base coat has an average thickness of 10-15µ
STEP TWO: sand-shot blasting to roughen the surface of the fasteners to be coated.
STEP THREE: Having fasteners coated with PTFE Xylan 1070 or Xylan 1424 in the required color. See the table below for the top coat most suited to for your situation.
| Top coat | Comments: | ASTM B-117 Salt Spray test | Working Temperature |
| Xylan 1424. | Fluoropolymer Organic. Water-based. Average thickness topcoat: 16µ. | *In combination with Zinc-Nickel: up to 3300 hours | -20℃ to 180℃ |
| Xylan 1070 | Fluoropolymer Organic. Solvent-based. Average thickness topcoat: 16µ. | *In combination with Zinc-Nickel: up to 3900 hours | -195℃ to 260℃ |
STEP FOUR: Heat treatment of the coated fasteners is performed.
Benefits of PTFE Xylan 1070 coated Stud bolts
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- Anti-Rust. In a ASTM B-117 Salt Spray test the coating remains resistant up to 3900 hours before red rust occurs.
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- Sustainability. As we are working towards a circular economy, PTFE coated fasteners are more sustainable then regular bolts due to their longer durability.
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- Lower maintenance costs. Longer durability of bolts does not only result in more sustainability but also lower maintenance costs.
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- Low torque friction coefficient. Due to the TEFLON top layer, torque friction is low.
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- Added value. Using colored bolts into the colored frame work, valve, flange or heat exchanger gives your product extra added value.
We have an extensive range of plating and coatings that provide outstanding temperature, chemical, abrasion and corrosion resistance designed to withstand harsh conditions. These coating services are combined with our production capabilities to customize a multi layered-coating system ideally suited to any specific environment.
Plating
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- Zinc (White / Yellow / Black)
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- Zinc Nickel
Galvanising
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- Hot-Dipped Galvanise
Fluorocarbon Coating
SermaGard® Coating Systems:
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- 1105
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- 1280
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- 1628
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- 1175
Xylan® Coating Systems:
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- Xylar 2
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- 1014
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- 1070
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- 1052
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- 1424
ASTM A193 B7 bolts are built to the requirements of numerous specifications and material design properties. To be more specific, ASTM A193 B7 alloy steel is a high temperature grade of A-193. B7 steel is also a chrome moly steel with a minimum tensile strength of 125ksi. Depending on your unique project requirement needs, grade B7 bolts can be used in numerous types of extreme conditions.
ASTM A193 B7 stud bolts are ideal for industrial and structural bolting application with high-temperature or high-pressure service environment. A193 B7 stud bolts is one of the most common materials for B16.5 flange bolting
| ASTM A193/A193M | Standard specification for alloy-steel and stainless steel bolting for high temperature or high pressure service and other special purpose applications. |
| ASME B16.5 | Covers recommended stud bolt quantity, diameter, and length for use in flanged pipe fittings. |
| ASME B1.1 Class 2A | Specifies the thread form, series, class, allowance, tolerance, and desig nation for unified screw threads. UNC for 1″ diameter and smaller. UN8 (8 threads per inch) for 1-1/8″ diameter and larger. |
FULLY THREADED STUD BOLT
TYPE OF THREAD: UNC, 8 TPI
TYPE, NUT: HEAVY HEXOGONAL
DESIGN SPEC, NUT: ASME / ANSI B18.2.2 HEX NUTS
DESIGN SPEC, STUD BOLT: ASME / ANSI B18.2.1 STUD BOLT
DESIGN SPEC, THREAD: ANSI B1.1
THREAD CLASS SYMBOL, NUT: 2B
THREAD CLASS SYMBOL, STUD BOLT: 2A
Material: ASTM A193 Grade B7 stud bolt
Xylan coated A197 B7 stud Bolt A194 2H nuts specifications
ASTM A193 B7 Stud Bolt Chemical Composition %
| 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 |
A193 B7 Stud Bolt Mechanical Properties
| Diameter | Tensile Strength | Yield Strength | Elongation | Reduction | Hardness |
|---|---|---|---|---|---|
| M64 or Below | 860 Mpa | 720 Mpa | 16 | 50 | 321 HB |
| M64 to M100 | 795 Mpa | 655 Mpa | 16 | 50 | 321 HB |
| M100 to M180 | 690 Mpa | 515 Mpa | 18 | 50 | 321 HB |
A194 2H Hex Nut Chemical Components %
| C | Mn | Ph | S | Si |
|---|---|---|---|---|
| 0.40 min | 1 | 0.04 | 0.05 | 0.4 |
A194 2H Hex Nut Mechanical Properties
| Size | TemperingTempFahrenheit | Proof LoadStress, ksi | Hardness |
|---|---|---|---|
| 1/4-1 1/2 | 850 | 175 | 248-327 |
| 1 1/2-4 | 850 | 175 | 212-327 |
| (A) StudsThreaded Rod / Stud A193 B7 |
HOW TO ORDER OUR XYLAN 1070 COATED STUD BOLTS
STUD BOLT, 2.1/2 IN DIA X 470MM LONG,
FULLY THREADED, C/W 2 HEAVY HEXAGON NUTS,
MATL STUDBOLTS ASTM A193 GRADE B7: NUTS ASTM A194 GRADE 2H,
BOTH ITEMS TO BE ZINC PLATING+ XYLAN 1070 COATED