Refractory Fixings & Anchors
We supply refractory anchors and fixing systems manufactured to project requirements and specified tolerances. Standard material options include stainless steel grades 304 and 310, as well as Inconel alloy 601.
Other stainless steel grades, mild steels and alloys can be considered to suit application requirements, including stainless steel grade 316. Please provide your drawings, operating conditions and material specification when enquiring.
Material Options
Refractory fixings are available in stainless steels and higher alloys, subject to specification and availability.
Stainless Steel at Elevated Temperatures
Stainless steels can provide corrosion resistance in many aggressive environments, along with oxidation and scaling resistance at elevated temperatures. Higher-alloy and specially designed stainless steels may extend the useful operating range. Actual performance depends on the environment, load, component design and exposure conditions.
Indicative Material Reference
| Property | Type 304 | Type 310 | Inconel Alloy 601 |
|---|---|---|---|
| Nearest Werkstoff No. | 1.4301 | 1.4845 | — |
| Maximum service temperature* | 800°C | 1100°C | Approximately 1230°C* |
| Melting point (approx.) | 1440°C | 1490°C | 1300–1375°C |
*Indicative values only. Maximum service temperatures depend on operating conditions and should be confirmed against the applicable material datasheet and design requirements.
Refractory Fixing Material Grades
The following grades are commonly considered for refractory fixing applications. Other grades can be supplied on request, subject to availability and specification.
Grade 1.4301 (304 / 18-8)
A widely used stainless steel grade containing approximately 18% chromium and 8% nickel. It offers good general corrosion resistance and is commonly used for welding, forming and fabrication.
Grade 310 (1.4845)
A heat-resistant stainless steel grade selected for applications requiring oxidation resistance and strength at elevated temperatures. Suitability depends on the operating environment and thermal cycling conditions.
Inconel Alloy 601
A nickel-chromium alloy known for high-temperature oxidation resistance. It also offers useful corrosion resistance and mechanical properties for demanding service environments.
Other Grades
Additional materials can be considered, including stainless steel grade 1.4401 (316), other stainless steels, mild steels and alloys. Contact us with your required grade and application details.
Using Stainless Steel at High Temperatures
Stainless steel oxidation resistance is influenced by alloy composition and service conditions. Chromium supports the formation of a protective oxide layer, while nickel and silicon can also influence oxidation behaviour and scale characteristics.
In air or steam, a compact, adherent chromium-oxide-based scale can help slow oxidation. Material selection should account for the operating temperature, atmosphere, thermal cycling, mechanical loading and expected service life.
Factors to Consider
Indicative Alloy Composition Reference
The supplied source information includes the following alloy families. Values below are presented as approximate reference ranges where legible; confirm exact limits and certification requirements against the applicable standard and material manufacturer's datasheet.
Commonly Referenced Grades and Alloys
| Grade / Alloy | Werkstoff No. | Indicative Composition / Notes |
|---|---|---|
| Type 304 | 1.4301 | Typically approximately 18% chromium and 8% nickel. |
| Type 310 | 1.4845 | Heat-resistant stainless steel; typically high chromium and nickel content. |
| Inconel Alloy 601 | — | Nickel-chromium alloy; chromium approximately 21–24%, nickel approximately 58–63%, with aluminium additions. |
| Type 309 | 1.4833 | Heat-resistant stainless steel grade. |
| Type 316 | 1.4401 | Stainless steel with molybdenum addition; commonly used where improved corrosion resistance is required. |
| Type 321 | 1.4878 | Titanium-stabilized stainless steel grade. |
| Alloy 330 | — | Nickel-chromium-iron alloy for elevated-temperature applications. |
| Alloy 600 | — | Nickel-chromium alloy for elevated-temperature and corrosion-resistant applications. |
| Alloy 800H | — | Nickel-iron-chromium alloy; composition and limits depend on the applicable specification. |
This summary is for general product information and is not a substitute for certified chemical analysis or a governing material specification. Exact chemistry varies by grade, product form and applicable standard.
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