Grade 347/347H Stainless Steel Plate

Grade 347 stainless steel is an 18/8 chromium-nickel alloy reinforced by columbium and tantalum. Generally used in the 800-1500°F temperature range, the columbium stabilizes it and makes it immune to carbine precipitation. Thus, it offers excellent intergranular corrosion and oxidation resistance after exposure to these elevated temperatures. Also, it possesses higher creep and rupture properties than 304/304L stainless steel.

Grade 347H contains more carbon (between 0.04% to 0.1%) than regular 347 (≥ 0.08%), which improves the creep properties and strength at temperatures above 1000°F. While they excel in high-temperature conditions, Grade 347 also demonstrates excellent toughness in cryogenic temperatures.

While both grades can be hardened only by cold working (and not heat treatment), they can be easily welded and formed using standard steel processing and fabrication practices. They also offer the following key benefits and advantages:

  • Superior resistance to intergranular corrosion
  • High strength, creep, and stress rupture properties
  • Excellent performance in extremely high-temperature conditions
  • Outstanding welding and forming characteristics
  • Good toughness in subzero temperatures
  • Non-magnetic in the annealed condition
  • Resists oxidation up to 1500°F

Grade 347 and 347H Stainless Steel Plate Applications

Grade 347 is recommended for welding applications that cannot be post-annealed. Because it can operate at high temperatures without losing strength, both 347 grades are ideal for welding equipment, furnace and boiler elements, heaters, high-pressure steam pipes, aircraft parts, and chemical-processing equipment.

Sabre Alloys streamlines our customers’ Grade 347 and 347H stainless steel supply chain in numerous industries by reducing the lead time associated with stainless steel acquisition and processing. The following are some of the industries we serve:

  • Petrochemical
  • Oil and Gas
  • Wastewater
  • Power generation
  • Energy
  • Water
  • Food processing
  • Environmental
  • Piping and valve manufacturing
  • Appliances
  • Pharmaceutical

Grade 347 and 347 Stainless Steel Plate Processing Services

In conjunction with our extensive material stock, Sabre Alloys offers various steel processing services to meet our customers’ material requirements better. Our value-added stainless steel services allow us to meet exact specifications with short turn-around times.

Sabre Alloys offer the following value-added steel processing services:

  • HD Plasma cutting
  • Shearing
  • Bar sawing
  • Waterjet cutting
  • Laser cutting

Contact Sabre Alloys

As a full-service stainless steel distributor, Sabre Alloys prides itself on getting you the steel you need, exactly how and when you need it. Let us help you save time and money with our high-quality Grade 347 and 347H stainless steel materials and processing services. For more information, call Sabre Alloys at 281-405-8580 to speak to a metal expert.