UNS S30409 Hex Bars, SS 304H Hexagon Bars, AISI SS 304H Stainless Steel 304H Round Bars Supplier, Manufacturer and Exporter in India
Din 1.4301 SS 304H Hexagon Bars, SS UNS S30409 Round Bars, Stainless Steel 304H Threaded Rods, 304H Stainless Steel 304H Cold Drawn Bars Suppliers in India.
GENERAL PROPERTIES
Alloy 304 is a T-300 series stainless steel austenitic, which has a minimum of 18% chromium and 8% nickel with a maximum of 0.08% carbon. It is the standard "18/8 stainless" that is commonly found in pans and cooking tools. Alloy 304 is the most versatile and widely used alloy in the stainless steel family. It may be used for a wide variety of home and commercial applications and exhibits excellent corrosion resistance, has a high ease of fabrication, outstanding formability, and tremendous strength. The austenitic stainless steels are also considered to be the most weldable of the high-alloy steels and can be welded by all fusion and resistance welding processes. Due to its controlled carbon content of 0.04 to 0.10, Alloy 304H provides improved high temperature strength when exposed to temperatures above 800oF. Alloy 304H also has greater short term and long term creep strength than Alloy 304L at temperatures above 500oC and is more resistant to sensitization than Alloy 304L.
APPLICATIONS
Alloy 304H is often used as a material of construction up to about 1500oF. Some examples of applications that Alloy 304H is commonly used for includes:
Most commonly used in petroleum refineries
Boilers
Heat exchangers
Condensers
Pipelines
Cooling towers
Steam exhausts
Electric generation plants
On occasion will be found in fertilizer and chemical plants
HEAT RESISTANCE
Good oxidation resistance in intermittent service to 870O C and in continuous service to 920O C
Continuous use of Alloy 304 in the 425-860°C range is not recommended if subsequent aqueous corrosion resistance is important
Alloy 304H has higher strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 500°C and up to about 800°C
Alloy 304H will become sensitized in the temperature range of 425-860°C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.
CORROSION RESISTANCE
Resistance to corrosion in oxidizing environments is a result from the 18 to 19% chromium that the 304 alloys contain
Resistance to moderately aggressive organic acids is a result from the 9 to 11% nickel that the 304 alloys contain
At times, Alloy 304L may show a lower corrosion rate than the higher carbon Alloy 304; otherwise, the 304, 304L, and 304H alloys may be considered to perform uniformly in most corrosive environments.
WELDING CHARACTERISTICS
Readily welded by most standard processes.
May be necessary to anneal the plate after welding
Annealing helps restore corrosion resistance lost by the sensitization.
PROCESSING - HOT FORMING
Working tempertarues of 1652-2102 degrees F are recommended
Material should be annealed at 1900 degrees F
Material should be water quenched or or rapidly cooled
PROCESSING - COLD FORMING
Alloy is quite ductile and forms easily
Helps increase strength and hardness of alloy
May leave alloy slightly magnetic
MACHINABILITY
Subject to work hardening during deformation
Subject to chip breaking
Best results achieved through slower speed, heavier feeds, good lubrication, and sharp tooling
CHEMICAL PROPERTIES:
%
Cr
Ni
C
Si
Mn
P
S
N
304H
min: 18.0
max:20.0
min: 8.0
max: 10.5
min: 0.04
max:0.10
0.75
max
2.0
max
0.45
max
0.03
max
0.10
max
MECHANICAL PROPERTIES:
Grade
Tensile Strength
ksi (min.)
Yield Strength 0.2%
Offset ksi (min.)
Elongation -
% in
50 mm (min.)
Hardness
(Brinell) MAX
Hardness
(Rockwell B) MAX
304H
75
30
40
201
92
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 – 1600°F
at 212°F
at 932°F
at 32 – 212°F
in tension (E)
0.285
9.2
11.0
9.4
12.4
0.12
29 x 106
HEX BARS PRODUCT OVERVEIW
Stainless Steel Hex Bar
Thickness Range of Flat Bar
3/16″ thru 3″ Larger sizes available upon request
Grades
202, 304/304L, 316/316L,304H, 316H, 309/S, 310/S, 317/L, 321/H, 347/H, 904L, 330, 254SMO, 410. In duplex grades, we can supply 2205 and 2507. Some nickel Alloy such as alloy 200/201, C276, Alloy 400, Alloy 600, Alloy 625, Alloy 800H, Alloy 800HT, 254SMO, AL6XN and others Titanium alloys and copper alloys are also available
INVENTORY:
Size in Inches
Wt per Ft
Wt per 12′
303
304/L
316/L
416
3/16″
0.104
1.248
X
X
X
X
1/4″
0.180
2.160
X
X
X
X
5/16″
0.290
3.480
X
X
X
X
3/8″
0.410
4.920
X
X
X
X
7/16″
0.560
6.72
X
X
X
X
1/2″
0.740
8.880
X
X
X
X
9/16″
0.930
11.16
X
X
X
X
5/8″
1.150
13.80
X
X
X
X
11/16″
1.390
16.68
X
X
X
3/4″
1.660
19.92
X
X
X
X
13/16″
1.950
23.40
X
X
X
7/8″
2.300
27.60
X
X
X
X
15/16″
2.600
31.20
X
X
X
X
1″
2.90
34.80
X
X
X
X
1-1/16″
3.30
39.60
X
X
X
X
1-1/8″
3.700
44.40
X
X
X
X
1-1/4″
4.600
55.20
X
X
X
X
1-5/16″
5.100
61.20
X
X
X
1-3/8″
5.600
67.20
X
X
X
X
1-7/16″
6.100
73.20
X
X
X
1-1/2″
6.600
79.20
X
X
X
X
1-5/8″
7.800
93.60
X
X
X
1-3/4″
9.030
108.36
X
X
X
X
1-7/8″
10.400
124.80
X
X
X
X
2″
11.80
141.60
X
X
X
X
2-1/4″
14.920
179.04
X
X
X
X
2-3/8″
16.920
203.04
X
X
X
2-1/2″
18.42
221.04
X
X
X
X
3″
26.53
318.36
X
X
X
X
STAINLESS STEEL BAR VALUE ADDED OPTIONS:
Stainless Steel Bar Value Added Options
Stainless Steel Bar Polishing
Harsh Steel can polish nearly any stainless steel bar item to a #4 polish, #6 Polish, #7 polish or a #8 mirror finish. Stainless steel polished bar can also be cut to size. Pitt free surfaces can also be provided.
Heatreating & Annealing
Some grades of stainless steel bars can be heatreated to change the mechanical properties. Precipitation Hardening Stainless Steels such as 17-4PH can be heatreated. 410 stainless steel bar can also be heatreated. In some cases, secondary annealing 300 series stainless steel may be required depending on the application
Positive Material Identification (PMI)
Harsh Steel can perform PMI testing in house for most stainless steel grades, or we can work with independent labs to complete PMI in order to meet customer specifications.
UT Testing
In some cases, UT testing of the stainless steel bar may be required. We can assist you with this requirement.
Need 1,100 pieces of 7/8″ 303 round bar cut to 2-1/8″ long? We can process this job in a few days with our Amada CM100CNC with precise part tolerances
Rapid cut of round bar 5/8″ thru 4″ dia
Larger stainless bar cutting thru 26″ in diameter
Multiple cutting stations allow us to ship cut stainless bar to size when you need it.
Grinding and polishing available upon request
Special heat treat requirements can also be supplied. Ask for details.
Stainless round bars can also be polished or center-less ground to exact tolerances.
We export our STAINLESS STEEL 304H HEX BARS products to Western and Eastern Europe, Saudi Arabia, Bangladesh, United States, United Arab Emirates, Canada, Angola, Argentina, Austria, Azerbaijan, Pakistan, Peru, Chile, Spain, France, United Kingdom, Indonesia, Israel, Iran, Kuwait, Mexico, Malaysia, Nigeria, Serbia, Singapore, Taiwan, Chile, Venezuela, Ecuador, Netherlands, Brazil, Colombia, Ghana, Iran, Denmark, Poland, Australia, Afghanistan, Bahrain, Costa Rica, Egypt, Iraq, Jordan, South Korea, Kazakhstan, Sri Lanka, Lithuania, Norway, Oman, Philippines, Poland, Qatar, Russia, Vietnam, South Africa, Nigeria, Mexico, Turkey, Hungary, Algeria, Belarus, Belgium, Bhutan, Bolivia, Bulgaria, Croatia, Czech Republic, Estonia, Finland, Greece, Italy, Japan, Libya, Romania, Thailand, Trinidad & Tobago,Tunisia, Ukraine, Yemen, Hong Kong, Gabon, China, Portugal, Switzerland, New Zealand, Sweden, Slovakia, Kenya, Lebanon, Morocco, Mongolia etc. We are sure that we also can cover the requirements requested by your company you can email us at
harshsteel@ymail.com for your instant requirements.