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Cannot be hardened by heat treatment
- Alloy 321 cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices.
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Alloy #321 is a high-titanium, soft annealed stainless intended for heat treating parts at temperatures up to 2000F. Alloy #309 may be used at temperatures up to 2240F. Stainless Steel Foil Roll Sizes and Packaging.
Alloy 321 cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices. Common Applications. Aerospace – piston engine manifolds; Chemical Processing; Expansion Joints; Food Processing – equipment and storage; Petroleum Refining – polythionic acid service
- Applications
- Description
- Chemistry Typical
- Physical Properties
- Mechanical Properties at Room Temperature Properties: Annealed
- Properties: Tempered
- Corrosion Resistance
- Finishes
- Wire Finishes
- Cold Forming
Aircraft collector rings, exhaust stacks, carburetor air intensifier tubes, exhaust manifolds, flexible couplings, jet engine parts, mufflers, pressure vessels, tubing, fasteners, flexible metal hose and bellows
Type 321 is an austenitic chromium-nickel stainless steel containing Titanium which is recommended for parts fabricated by welding which cannot subsequently be annealed. Type 321 is a stabilized austenitic stainless steel similar to type 304 but with a titanium addition. This titanium addition reduces or prevents carbide precipitation during weldin...
Carbon: 0.08 max Manganese: 2.00 max Silicon: 0.75 max Chromium: 17.00-19.00 Nickel: 9.00-12.00 Molybdenum: 0.75 max Phosphorus: 0.045 max Sulfur: .030 max Copper: 0.75 max Nitrogen: .010 max Titanium: 5x (Carbon+ Nitrogen) min-0.70 max Iron: Balance
Density: 0.29 lbs/in3 9.01 g/cm3 Electrical Resistivity: microhm-in (microhm-cm): 68 °F (20 °C): 28.4 (72) Specific Heat: BTU/lb/°F (kJ/kg•K): 32 - 212 °F (0 - 100 °C): 0.12 (0.50) Thermal Conductivity: BTU/hr/ft2/ft/°F (W/m•K): At 212 °F (100 °C): 9.3 (16.0) At 932 °F (500 °C): 12.8 (22.0) Mean Coefficient of Thermal Expansion: in/in/°F (µm/m•K) 3...
Ultimate Tensile Strength: 75 KSI min (515 MPa min) Yield Strength (0.2% Offset): 30 KSI min (250 MPa min) Elongation: 40% min Hardness: Rb 95 max
Type 321 can be cold rolled to various tempers. Contact Ulbrich Technical Services for additional information.
Type 321 has excellent corrosion resistance equivalent to type 302 or 304 in the annealed condition and superior if a weldment in these grades has not been post-weld annealed or if the application involves service in the 800 °F - 1600 °F range.
# 1 - Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required. # 2D - Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process. # 2B - Smooth finish p...
XC - Extra clean bright annealed or bright annealed and cold rolled Grease - Ultra-bright finish (for decorative applications) Soap - Soap is not removed from tempered wire to act as a lubricant. * Contact Ulbrich Wire for custom wire finishes.
Type 321 can be readily formed and drawn. Like most other austenitic stainless steels, type 321 work hardens and may require annealing after severe forming.
Aug 11, 2020 · Stainless Steel Tool Wrap is typically .002” thick type 309 or Type 321 Stainless Steel foil used to wrap metal tools, dies, and other parts during high-temperature heat-treating to achieve a hardened temper. The part to be heat-treated is placed in an envelope formed by folding a foil sheet in half and sealing the.
Hardening: This alloy does not harden by heat treating, just the same as the 304. Principal Design Features: The key feature of 321 stainless is its resistance higher resistance to extreme temperatures and conditions, when compared to 304. It contains titanium as a stabilizing element against chromium carbide formation.
- 5.5K
- Standard Finishes
- A167
Alloy 321 cannot be hardened by heat treatment and this alloy possesses excellent low-temperature toughness. Furthermore, type 321 stainless steel can be easily welded and machined. Visit the type 321 stainless steel general properties page to learn more.
Mar 29, 2005 · If this is not the case, it appears that AISI 321 stainless steel can be purchased in the solution annealed condition (no stabilization). According to ASM Handbooks Type 321 stainless steel is to be given stabilization HT only if in contact with highly corrosive media.
