UNS S44000 Hex Bars, SS 440 Hexagon Bars, Stainless Steel 440 Round Bars Supplier, Manufacturer and Exporter in India
Din 1.4125 SS 440 Hexagon Bars, SS UNS S44000 Round Bars, Stainless Steel 440 Threaded Rods, 440 Stainless Steel Cold Drawn Bars Suppliers in India.
GENERAL PROPERTIES:-
Stainless steels are high-alloy steels which have high corrosion resistance compared to other steels due to the presence of large amounts of chromium. Based on their crystalline structure, they are divided into three types such as ferritic, austenitic, and martensitic steels. Another group of stainless steels are precipitation-hardened steels. They are a combination of martensitic and austenitic steels. Grade 440C stainless steel is a high carbon martensitic stainless steel. It has high strength, moderate corrosion resistance, and good hardness and wear resistance. Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Its very high carbon content is responsible for these characteristics, which make 440C particularly suited to such applications as ball bearings and valve parts.
APPLICATIONS:-
Typical applications include:
- Rolling element bearings
- Valve seats
- High quality knife blades
- Surgical instruments
- Chisels
CORROSION RESISTANCE:-
Good resistance to the atmosphere, fresh water, foods, alkalies and mild acids. Best resistance in the hardened and tempered and passivated condition. A smooth polished surface also assists.
The corrosion resistance of grade 440C approximates that of grade 304 in many environments.
HEAT RESISTANCE:-
Not recommended for use in temperatures above the relevant tempering temperature, because of reduction in mechanical properties by over-tempering.
HEAT TREATMENT:-
Annealing – Full anneal – 850-900°C, slow furnace cool to about 600°C and then air cool. Sub-critical Annealing – 735-785°C and slow furnace cool.
Hardening – Heat to 1010-1065°C, followed by quenching in warm oil or air. Oil quenching is necessary for heavy sections. Immediately temper at 150-370°C to obtain a wide variety of hardness values and mechanical properties as indicated in the accompanying table.
Tempering in the range 425-565°C is to be avoided because of reduced impact resistance and corrosion resistance. Tempering in the range 590-675°C results in lower hardness (the product become machinable) and high impact resistance.
WELDING:-
If welding is necessary pre-heat at 250°C and follow welding with a full anneal. Grade 420 filler will give a high hardness weld (although not as high as the 440C), but 309 or 310 will produce soft welds with higher ductility.
MACHINING:-
In the annealed condition this grade is relatively easily machined; approximately the same as for high speed steel. Chips are tough and stringy so chip breakers are important. If these grades are hardened machining becomes more difficult and probably impossible.
COMPOSITION:-
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 440C | min. max. | 0.95 1.20 | - 1.00 | - 1.00 | - 0.040 | - 0.030 | 16.00 18.00 | - 0.75 | - | - |
MECHANICAL PROPERTIES:-
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell (HR C) | Impact Charpy V (J) |
|---|---|---|---|---|---|
| Annealed* | 758 | 448 | 14 | 269HB max# | - |
| 204 | 2030 | 1900 | 4 | 59 | 9 |
| 260 | 1960 | 1830 | 4 | 57 | 9 |
| 316 | 1860 | 1740 | 4 | 56 | 9 |
| 371 | 1790 | 1660 | 4 | 56 | 9 |
| * Annealed properties are typical for Condition A of ASTM A276# Brinell Hardness is ASTM A276 specified maximum for annealed 440A, B and C. | |||||
PHYSICAL PROPERTIES:-
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (mm/m/°C) | Thermal Conductivity(W/m.K) |
Specific Heat 0-100°C (J/kg.K) |
Electrical Resistivity (nW.m) | |||
|---|---|---|---|---|---|---|---|---|---|
| 0-100°C | 0-200°C | 0-600°C | at 100°C | at 500°C | |||||
| 440 C | 7650 | 200 | 10.1 | 10.3 | 11.7 | 24.2 | - | 460 | 600 |
POSSIBLE ALTERNATIVE GRADES:-
| Grade | Why it might be chosen instead of 440C |
|---|---|
| 440A/B | Slightly softer and more corrosion resistant grade needed |
| 440F | High machinability required, with same hardness and hardenability as 440C |
| 420 | Lower strength and hardness needed than any of the 440 Grades |
| 416 | Higher machinability required, and the much lower hardness and strength is still adequate |
Harsh steel Supplies and Exports Stainless steel 440 Strips from 2.5mm wide to 400mm, slit to close tolerances. We supply in below specifications:-
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 440 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.
