ASTM A240 347/347H Stainless Steel sheet, 2B BA NO.4 mirror finish,
1219*2438mm
HAOSTEEL is one of the most professional manufacturer and supplier
of ASTM A240 347 347H stainless steel plate .We offer highly
reliable sus 347H 347 stainless steel plate in various
grades,including mid plate,thick sheet,cold drawn steel sheet and
hot rolled steel plate.
Description:
Haosteel Stainless inventory now includes Alloy 347/347H (UNS
S34700/S34709) in sheet, sheet coil, plate, round bar, processed
flat bar and tubular products.
General Properties
Alloy 347 is a stabilized, austenitic, chromium steel containing
columbium which allows for the elimination of carbide
precipitation, and, consequently, intergranualr corrosion. Alloy
347 is stabilized by the additions of chromium and tantalum and
offers higher creep and stress rupture properties than alloy 304
and 304L which may also be used for exposures where sensitization
and intergranualr corrosion are of concern. The addition of
columbium also allows Alloy 347 to have excellent corrosion
resistance, even superior to that of alloy 321. 347H is the higher
carbon composition form of Alloy 347 and demonstrates improved high
temperature and creep properties.
Specifications: UNS S34700 / S34709
Applications:
Alloy 347 is frequently used for the fabrication of equipment,
which must be placed in service under severe corrosive conditions,
and is also common to the petroleum refining industries.
Applications that consistently used Alloy 347 include:
High temperature chemical processes
Heat exchanger tubes
High temperature steam service
High pressure steam pipes
Radiant superheaters
Boiler tubes
Heavy duty exhaust systems
General refinery piping
Standards:
ASTM/ASME: UNS S34700 / S34709
EURONORM: FeMi35Cr20Cu4Mo2
DIN: 2.4660
Corrosion Resistance:
Offers similar resistance to general, overall corrosion as Alloy
304
Used for applications where alloys such as Alloy 304 are vulnerable
to intergranualr corrosion
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)
Alloy 347 is preferred over Alloy 321 for aqueous and other low
temperature environments Primarily used in high temperature
environments where resistance to sensitization is necessary, in
turn preventing intergranualr corrosion at lower levels Susceptible
to stress corrosion cracking Exhibits oxidation resistance similar
to all other 18-8 austenitic stainless steels Weldability
Austenitic stainless steels are considered to be the most weldable
out of all high alloy steels Can be welded by all fusion and
resistance welding processes
Heat Treatment
Annealing temperature range is 1800 to 2000°F May be stress relief
annealed within the carbide precipitation range of 800 to 1500°F
without any danger of subsequent intergranualr corrosion Cannot be
hardened by heat treatment
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 | 0.30
max | 0.75
max | 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 | 0.30
max | 0.75
max | 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 |
The Grade Range:
a.)200Series : 201,202.204Cu.
b.)300Series :
301,302,304,304Cu,303,303Se,304L,305,307,308,308L,309,309S,310,310S
.etc.
c.)300Series
:410,420,430,420J2,439,409,430S,444,431,436,441,446,440A,440B,440C.etc.
d.)Others
:2205,904L,S31803,330,660,630,17-4PH,631,17-7PH,2507,F51,S31254
etc.
The Size Range:
a.)Thickness : 3~150mm
b.)Width:1500mm,1800mm, 2000mm ,2500mm or as customers’ required
c.)Length:3000mm,6000mm or as customers’ required
Application:
304 Stainless Steel is used in a wide variety of home and
commercial applications, including:
Kitchen benches, sinks, troughs, equipment, and appliances
Chemical containers, including for transport
Food processing equipment, particularly in beer brewing, milk
processing, and wine making
Heat exchangers
Architectural trim and molding
Woven or welded screens for mining, quarrying & water filtration
Automotive and aerospace structural use
Nuts, bolts, screws, and other fasteners in the marine environment
Construction material in large buildings
Dyeing industry
