Ask the Metals Experts

FROM THE DESK OF THE METALS EXPERTS

Welcome to the MetalTek Blog.

As your Metals Partner, it is our goal to educate you on various casting processes. Feel free to browse around to learn more but if you have questions or need to submit an RFQ, please contact us. MetalTek International. Because You Demand More Than Metal.

Material Applications: Heat Resistant Alloy Profiles Part 2

Posted by Dave Olsen on 9/6/16 2:35 PM

Iron Chrome (Fe-Cr) Alloys. This group includes the grades HA, HC and HD.

Description

This family of stainless steels is often used in higher temperature but lower stress applications.

Properties – Why select this material

  • Effective in load bearing applications at temperatures up to 1200°F-1300°F/650°C-700°C).
  • HA is used for components in low stress applications.
  • Resistant to high sulfur environments.
Some Typical Application Types
  • Valves, flanges, and fittings
  • Mineral processing
  • Ore roasting furnace components
  • Grate bars
  • Salt pots

Read More

Topics: Alloy Selection, Heat Resistent Stainless Steel, Physical Properties, Mechanical Properties

Material Applications: Heat Resistant Alloy Profiles Part 1

Posted by Dave Olsen on 9/6/16 2:30 PM

Nickel Iron Chrome (Ni-Fe-Cr) Alloys. This group includes grades HX and HW.

Description

These high temperature stainless steel have the highest nickel content (around 60%) in the high temperature family.
  
Properties – Why select this material

  • HX and HW provide the highest carburization resistance of the standard alloys.
  • Good oxidation resistance.
  • Good thermal shock resistance.

Some Typical Application Types

  • Electrical heating elements
  • Hearths
  • Muffles
  • Quenching fixtures
  • Containers for molten lead

Read More

Topics: Alloy Selection, Heat Resistent Stainless Steel, Physical Properties, Mechanical Properties

Material Applications: Heat Resistance

Posted by Dave Olsen on 9/6/16 2:19 PM

By way of definition, heat resistant applications typically occur above 1200°F/670°C and require the use of materials that have enhanced resistance to oxidation and other environment-specific gases, and mechanical property degradation. Performance in these high-temperature environments is indicated by acceptable levels of tensile strength, stress rupture life and creep strengths that correspond to the required time of service. 

Generally, material properties are reduced as temperature increases. This is particularly noticeable in carbon steels.  Over the years, metals companies have developed alloy steels containing nickel and chromium that add significant improvements in strength and ductility, among other things. The most commonly used materials historically in these applications are the alloys corresponding to ASTM A297 “H-series” cast stainless steels, although may proprietary alloys have gained favor in recent years. 

Read More

Topics: Alloy Selection, Heat Resistent Stainless Steel, Physical Properties, Mechanical Properties

Heat Resistant Stainless Steel Material Profiles:Part 2

Posted by Dave Olsen on 3/23/16 2:58 PM

Grade

  • MTEK 25-35W Heat Resistant Stainless Steel

Description

  • HP material modified with Tungsten.  

Properties – Why select this material

  • The addition of tungsten increases rupture strength due to the formation of very stable tungsten carbides
  • A disadvantage of this alloy is its low ductility, particularly after service
  • Service limit 2100°F / 1150°C
Read More

Topics: Ferrous Alloys, Chrome-Nickel Alloy, Nickel-Chrome Alloy, Heat Resistent Stainless Steel

Heat Resistant Stainless Steel Material Profiles:Part 1

Posted by Dave Olsen on 3/23/16 2:43 PM

Grade

  • MTEK 20-10 (J92603 / HF) Heat Resistant Stainless Steel

Description

  • Economical heat resistant grade containing enough chromium and nickel for good resistance to oxidation.

Properties – Why select this material

  • Economical heat resistant grade
  • Service limit 1600°F / 870°C
Read More

Topics: Ferrous Alloys, Chrome-Nickel Alloy, Nickel-Chrome Alloy, Heat Resistent Stainless Steel

MetalTek International
Download Our Alloy Guide 
Download Our Where Used Guide 

Follow Us