We can produce 321H stainless steel round rods, 321H forging, sheet, coil and profiledstrip,Deformed steel, flat steel, mould,steel wire,have all specifications. With Bozhong Group production experience, strict control 321H chemical composition and 321H mechanical properties.From casting, forging, steel to hot and cold rolling process, heat treatment, etc, we have the control of professional engineers. We have advanced precision machining equipment, according to the requirements of users machining. in order to achieve the most satisfied with the user requirements.

Equivalent designations

ASTM/ASTE: UNS S32109

en 1.4941

Production specification

Round bar steel: 1mm to 3500mm

Square-shape steel: 1mm to 4000mm

Plate steel:0.1mm to 4000mm

Width: 10mm to 2500mm

Lenth: We can supply any lenth based on the customer's requirement.

Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shape

Tubings: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.

Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement

Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement

Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode. 

Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price. 
We serve you with our honesty, integrity, and professionality.

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

Physical 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-psi
at 68 °F	at 68 – 212°F	at 68 – 1832°F	at 200°F	at 32 – 212°F	in tension (E)
0.286	9.2	20.5	9.3	0.12	28 x 106

Corrosion Resistance

1、exhibits good general corrosion resistance that is comparable to 304.

2、developed for use in the chromium carbide precipitation range of 1800 – 1500°F (427 – 816°C) .

3、can be used in most diluted organic acids at moderate temperatures .

4、can be used in pure phosphoric acid at lower temperatures.

5、can be used in up to 10% diluted solutions at elevated temperatures.

6、resists polythionic acid stress corrosion cracking in hydrocarbon service.

7、 utilized in chloride or fluoride free caustic solutions at moderate temperatures.

8、does not perform well in chloride solutions, even in small concentrations, or in sulfuric acid service.

Alloy 321/H can be easily welded and processed by standard shop fabrication practices.

Hot Forming

1、Working temperatures of 2100 – 2300°F (1149 – 1260°C) are recommended for forging, upsetting and other hot working processes.

2、Alloy not suitable for work at temperatures below 1700°F (927°C).

3、Material must be water quenched or fully annealed after working to re-attain maximum corrosion resistance.

Cold Forming

Quite ductile and forms easily.

Welding

1、Readily welded by most standard processes.

2、Post weld heat treatment is not necessary

Machining

Hardening rate of 321 makes it less machinable than 410 stainless steel, but similar to 304

Common Applications

1、Aerospace – piston engine manifolds

2、Chemical Processing

3、Expansion Joints

4、Food Processing – equipment and storage

5、Petroleum Refining – polythionic acid service

6、Waste Treatment – thermal oxidizers