1. Specifications about stainless steel sheet
Type 347 / 347H stainless steel is an austenitic grade of chromium
steel, which contains columbium as a stabilizing element. Tantalum
can also be added for achieving stabilization. This eliminates the
carbide precipitation, as well as intergranular corrosion in steel
pipes. Type 347 / 347H stainless steel sheets/plate offer higher creep and stress rupture properties than grade 304 and
304L. This makes them suitable for exposures to sensitization and
intergranular corrosion. Moreover, the inclusion of columbium
allows 347 sheets/plates to have excellent corrosion resistance,
even superior to that of 321 stainless steel pipes. However, 347H
steel is the higher carbon composition substitute of stainless
steel pipe grade 347. Therefore, 347H steel sheet/plate offer
improved high temperature and creep properties.
With wide experience and expertise, Bozhong Group is one of the
leading 347/347h stainless steel sheet/plate manufacturers and
suppliers. We have hundreds of high-qualified workers at your
service. Please rest assured to get the competitive price 347/347h
stainless steel sheet/plate for sale with us.
Our range of SS 347 sheet/plate is extremely economical, and thus making our products highly
valuable among our clients. Most sizes of SS 347 sheet/plate can be
cut to exact sizes. Non standard sizes of SS 347 sheet/plate can be
made to order. SS 347H sheet/plate are available in diverse sizes,
grades and shapes, and are quality passed and tested as per
international standards. Bozhong Tubes as well fabricate and design
these SS 347H sheet/plate in different specifications and designs
as per requirements of our customers.
Standard:
| STANDARD | UNS | WERKSTOFF NR. |
| SS 347 | S34700 | 1.4550 |
| SS 347H | S34709 | 1.4961/1.4912 |
Chemical Properties:
| C | Cr | Mn | Ni | P | S | Si | Cb/Ta |
| 347 | 0.08 max | min: 17.0
max: 20.0 | 2.0 max | min: 9.0
max: 13.0 | 0.04 max | 0.30max | 0.75max | min:10x C
max: 1.0 |
| 347H | min: 0.04
max: 0.10 | min: 17.0
max: 20.0 | 2.0 max | min: 9.0
max: 13.0 | 0.03 max | 0.30max | 0.75max | min:10x C
max: 1.0 |
Mechanical Properties:
| Grade | Tensile Strength ksi (MPa) min | Yield Strength 0.2% ksi offset ksi (MPa) min | Elongation (% in 50mm) min | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
| 347/347H | 75
(515) | 30
(205) | 40 | 201 | 95 |
Physical Properties:
Density
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 | 68-932°F | at 32 – 212°F | in tension (E) |
| 0.288 | 9.2 | 11.4 | 14.7 | 0.12 | 28 x 106 |
Corrosion Resistance:
1, Offers similar resistance to general, overall corrosion as Alloy
304
2, Used for applications where alloys such as Alloy 304 are
vulnerable to intergranualr corrosion
3, Generally used for heavy welded equipment which cannot be
annealed and for equipment which is operated between 800 to 150°F
(427 TO 816°C)
4, Alloy 347 is preferred over Alloy 321 for aqueous and other low
temperature environments
5, Primarily used in high temperature environments where resistance
to sensitization is necessary, in turn preventing intergranualr
corrosion at lower levels
6, Susceptible to stress corrosion cracking
7, Exhibits oxidation resistance similar to all other 18-8
austenitic stainless steels
Weldability
1, Austenitic stainless steels are considered to be the most
weldable out of all high alloy steels
2, Can be welded by all fusion and resistance welding processes
Heat Treatment
1, Annealing temperature range is 1800 to 2000°F
2, May be stress relief annealed within the carbide precipitation
range of 800 to 1500°F without any danger of subsequent
intergranualr corrosion
3, Cannot be hardened by heat treatment
Company Information
Bozhong Metal Group Co. Ltd was established in 2001 and is located
in China's largest stainless steel production base - Jiangsu
Province. Our company is an integrated company, gathering the
stainless steel production, trade, processing, logistics and
distribution. The main products include steel sheets, steel plates,
steel coils, steel pipes, steel tubes, steel bars, steel circles,
square steel, hexagonal bar, steel tube, steel pipe fittings,
flanges, etc. And also we can produce according to the requirments
of the costomer. The production capacity of our company is anout
250000 tons per year.
The total area of manufactory is about 60, 000square meters and it
has its own stainless steel research and development department,
production department and selling department.
Strict quality control system and perfect after-sales service
system are always our top concern which can guarantee and track the
quality of our products from raw materials procurement, production
processes, finish products as well as after-sales service.
Our Superiority
1. We can promise the quality! Trust is the basic of business.
2. We always provide best and professional forward service and
after sales service.
3. We always shorten delivery time for our buyer.
4. We always try our best to satisfied our guests.
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