Precision Tube, Stainless Steel Seamless Tube, Tp321/Tp321h/Unss32100/1.4541, ASTM A249 for Machinery, with Factory Price

• Type: Stainless Steel Pipes
• Standard: ASTM, AISI, GB, JIS, DIN
• Grade: 300 Series
• Certification: ISO, AISI, ASTM, GB, EN
• Shape: Round
• Technique: Cold Rolled
• Surface Treatment: Pickling
• Transport Package: Plywood Case, Knitting Strips
• Specification: OD: 1/4"--8", WT: 10S--XXS
• Origin: China
• HS Code: 7304119000
• Production Capacity: 15000tons/Year

Product Description

Product Parameters

 

GRADE 321 & GRADE 321H SPECIFICATION

Grade 321 is a titanium stabilized austenitic stainless steel with good general corrosion resistance. It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 - 1500°F (427 - 816°C). The grade resists oxidation to 1500°F (816°C) and has higher creep and stress rupture properties than grade 304 and 304L. It also possesses good low temperature toughness.

Grade 321H is the higher carbon (0.04 - 0.10) version of the alloy. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000oF (537°C). In most instances, the carbon content of the plate enables dual certification.

Alloy 321 cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices.
 

Product application

Applications

• Aerospace - piston engine manifolds
• Chemical Processing
• Expansion Joints
• Food Processing - equipment and storage
• Petroleum Refining - polythionic acid service
• Waste Treatment - thermal oxidizers

Product Description

 

Chemical Properties

	Cr	Ni	C	Si	Mn	P	S	N	Ti	Fe
321	min:17.0 max:19.0	min: 9.0 max:12.0	max: 0.08	max: 0.75	max: 2.0	max: 0.045	max: 0.03	max: 0.10	min:5*(C+N) max:0.70	Balance
321H	min:17.0 max:19.0	min: 9.0 max:12.0	min:0.04 max:0.10	min:18.0 max:20.0	max:2.0	max:0.045	max:0.03	max:0.10	min:5*(C+N) max:0.70	Balance

Mechanical Properties

Grade	Tensile Strength ksi (min.)	Yield Strength 0.2% Offset ksi (min.)	Elongation - % in 50 mm (min.)	Hardness (Brinell) MAX
321	75	30	40	217

Physcial Properties

Denstiy lbm/in3	Coefficient of Thermal Expansion (min/in)-°F		Thermal Conductivity BTU/hr-ft-°F	Specific Heat BTU/lbm -°F	Modules of Elasticity (annealed)2-ps
at 68 °F	at 68 - 212°F	at 68 - 1832°F	at 200°F	at 32 - 212°	in tension (E)
0.286	9.2	20.5	9.3	0.12	28 x 10-6

 

Standards

PRODUCT STANDARD: ASTM A213/ ASTM A312/ ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...

STEEL GRADE DESCRIPTION:

• ASTM/ASME: UNS S32100 / S32109
• EURONORM: 321 / 1.4541
• EURONORM: 321H / 1.4878

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