Alloy 321/321H Technical Information
Robert-James Sales, Inc.
Robert-James Sales, Inc.
Technical Information
  Piping Definitions Tube Stainless Steel Alloys Specifications Conversion Calculators 

 
Alloys

Alloy 20
2205
Alloy C-276
317L
310S
321/321H
347/347H
254SMO
AL-6XN
6061 T6
904L
410
304/304L
316/316L
Alloy 200
Alloy 400
Alloy 600
Alloy 625
Alloy 800/800H/800HP
Alloy 825

321/321H

Chemical Composition %

C Cr Mn Ni P S Si Ti
Max   Max   Max Max Max  
0.08 17.0-20.0 2.0 9.0-13.0 0.04 0.30 0.75 Trace *
* The titanium content shall not be less than 5 times the carbon content and not more than 0.60% Note: 321 H requires the titanium content to be not less than 4 times the carbon content and not more than 0.60%

AVAILABILITY
Seamless Pipe 1/2" - 16"
Weld Pipe 6" - 12"
Bar 1" - 12"
Butt-Weld Flanges 1/2" - 8"
Flanges 1/2" - 8"

SPECIFICATI0NS
ASTM
A312, A403, A182, A479, A276
ASME
SA312, SA403, SA182, SA479, SA276

DESCRIPTION
These titanium bearing stainless steels are stabilized against carbide precipitation and designed for operation within the damaging temperature range where carbide precipitation develops. In this type of steel, the carbon combines preferentially with titanium to form a harmless titanium carbide, leaving the chromium in solution to maintain full corrosion resistance. Type 321 is basic type 304 modified by adding titanium in an amount at least 5 times the carbon plus nitrogen contents.

DESIGN FEATURES
• Immune to intergranular corrosion when
heated within the carbide precipitation range.
• Titanium addition eliminates the formation of
chromium carbides at the grain boundaries by
tying up the carbon and nitrogen as titanium
carbides or nitrides.
Better high temperature properties than 304 or
304L. Generally used for parts which are intermittently heated up to 1500 deg.F. For
continuous service the alloy is good to 1650 deg.F.
• May be susceptible to chloride stress cracking.
• Excellent weldability in field.
• Type 321 H has high carbon (.04 - 10) for better high temperature creep properties.

TYPICAL APPLICATIONS
High temperature chemical process heat exchanger tubes Refineries High temperature steam service

TENSILE REQUIREMENTS
Tensile Strength (KSI) 75
Yield Strength (KSI) 30

KSI can be converted to MPA (Megapascals) by multiplying by 6.89

Call People Dedicated to Quality

800-666-0088 • Buffalo, NY (HQ)
800-777-2008 • Chicago, IL
800-777-0820 • Cleveland, OH
800-777-1858 • Cranbury, NJ
800-777-2008 • Greenville, WI
800-777-0510 • Indianapolis, IN
800-725-1839 • Los Angeles, CA
800-777-1355 • Minneapolis, MN
800-565-5525 • Raleigh/Durham, NC
800-777-2260 • Salt Lake City, UT
800-666-0088 • Tavenier, FL

Robert-James Sales, Inc.
The contents of this website are presented for information purposes only, and while effort has been made to ensure their accuracy, they are not to be contrived as warranties or guarantees, expressed or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and conditions, which are available on request. We reserve the right to modify or improve the designs or specifications of our products at any time without notice. Always verify that you have the most recent product specifications or other documentation prior to the installation of these products.

eRGB.biz
©2017 Robert-James Sales, Inc.