ASTM 321 Stainless Steel Bar with High Quality

• Type: Stainless Steel Bars
• Standard: ASTM
• Grade: High Quality Steel
• Certification: ISO
• Shape: Round, Square, Flat
• Technique: Hot Rolled, Forged
• Model NO.: 321
• Surface Treatment: Grinded, Peeled, Polished, Rough Turned
• Similar Grades: Uns S32100
• Size Range: Diameter: 20-480mm
• Delivery Condition: Annealed, Qunched and Tempered
• Surface Condition: Grinded, Peeled, Polished, Rough Turned
• Quality Standard: ASTM-A276
• Transport Package: Apply The Shipping Packing
• Specification: Diameter: 20-480mm
• Trademark: FUSHUN
• Origin: Hubei, Huangshi
• HS Code: 7228600000
• Production Capacity: 500tons Per Month

Product Description

Similar Grades:
 UNS S32100
Shape: 
Round, Flat, Square.
Size Range:

	Diameter(mm)	Thickness (mm)	Width (mm)	Length(mm)
Round	20-480	-	-	2000-5800
Square	20-480	-	-	2000-5800
flat	-	20-50	80-600	2000-5800

 
Steel-making Condition: 
EF, EF/EAF+LF+VD, EF/EAF+ESR
Delivery Condition:
Annealed , Quenched + Tempered

Surface Condition: 
Black, Grinded, Peeled, Rough turned, Polished

Features:
1.Competitive price
2.Immediate delivery
3.Premium quality
4.Reliable service
5.MOQ: 1 Ton
 

Packing details	In seaworthy packing, as your requirement.
Delivery details	within 30-50 days

 

Chemical Composition:

C	Mn	P	S	Si	Cr	Ni	N	Mo
0.08max	2.00max	0.045max	0.030max	1.0max	17.0-19.0	9.0-12.0	/	/

 
 

Mechanical Properties

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
				Rockwell B (HR B) max	Brinell (HB) max
321	515	205	40	95	217

 

 
 

Heat Resistance
Good oxidation resistance in intermittent service to 900°C and in continuous service to 925°C. These grades perform well in the 425-900°C range, and particularly where subsequent aqueous corrosive conditions are present. 321H has higher hot strength, and is particularly suitable for high temperature structural applications.
Heat Treatment
Solution Treatment (Annealing) - heat to 950-1120°C and cool rapidly for maximum corrosion resistance.
Stabilising - heat to 870-900°C for 1 hour per 25mm of thickness and air cool. Stabilisation is recommended for most severe service conditions (above 425°C) and particularly for material annealed at the upper side of the annealing temperature range.
Stress Relief - Heat to 700°C for 1 to 2 hours and air cool.
These grades cannot be hardened by thermal treatment.
Welding
Excellent weldability by all standard fusion methods, both with and without filler metals. AS 1554.6 pre-qualifies welding of 321 and 347 with Grade 347 rods or electrodes; high silicon version of 347 is also pre-qualified for welding of 321.

Applications
Typical applications include:
         Aircraft exhaust manifolds
         Expansion joints
         Bellows
         Furnace parts
         Heating element tubing
         Heat Exchangers
         Woven or welded screens for high temperature mineral processing
         Spiral Welded tube for burner pipes and flues

 
Introduction
Grades 321 and 347 are the basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) or Niobium (347) additions. These grades are used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850C. Grade 321 is the grade of choice for applications in the temperature range of up to about 900C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.
Grade 321H is a modification of 321 with a higher carbon content, to provide improved high temperature strength.
A limitation with 321 is that titanium does not transfer well across a high temperature arc, so is not recommended as a welding consumable. In this case grade 347 is preferred - the niobium performs the same carbide stabilisation task but can be transferred across a welding arc. Grade 347 is therefore the standard consumable for welding 321. Grade 347 is only occasionally used as parent plate material.
Like other austenitic grades, 321 and 347 have excellent forming and welding characteristics, are readily brake or roll formed and have outstanding welding characteristics. Post-weld annealing is not required. They also have excellent toughness, even down to cryogenic temperatures. Grade 321 does not polish well, so is not recommended for decorative applications.
Grade 304L is more readily available in most product forms, and so is generally used in preference to 321 if the requirement is simply for resistance to intergranular corrosion after welding. However 304L has lower hot strength than 321 and so is not the best choice if the requirement is resistance to an operating environment over about 500C.
 
 Contact Information:
FUSHUN SPECIAL STEEL CO., LTD.
 
  
 
Mobile : [phone]
 
Website: fushunmetal.en.made-in-china.com