ASTM A276 UNS S43000 Flat Bars, SS 420 Flat Bars, Stainless Steel 420 Flat Bars Supplier, Manufacturer and Exporter in India
Din 1.4034 SS 430 Flat Bars, SS UNS S42000 Flat Bars, Stainless Steel 420 Flat Rods, 420 Stainless Steel Cold Drawn Bars Suppliers in India.
STAINLESS STEEL 420 FLAT BAR GENERAL PROPERTIES:
Alloy 420 is a hardenable, martensitic stainless steel that is a modification of Alloy 410. Similar to 410, it contains a minimum of 12% chromium, just sufficient enough to give corrosion resistant properties. Alloy 420 has higher carbon content than Alloy 410 which is designed to optimize strength and hardness characteristics. It has good ductility it the annealed condition but is capable of being hardened up to Rockwell hardness 50 HRC, the highest hardness of the 12% chromium grades. Due to its hardening properties, Alloy 420 is not often welded, although it is possible. Martensitic stainless steels are designed for high hardness and sometimes other properties are to some degree compromised. Corrosion resistance is lower than the common austenitic grades and their useful operating range is limited by their loss of ductility at sub-zero temperatures and loss of strength by over-tempering at elevated temperatures. Its best corrosion resistance is achieved when the metal is hardened and surface ground or polished.
STAINLESS STEEL 420 FLAT BAR APPLICATIONS:
Alloy 420 is used for a variety of applications where good corrosion and outstanding hardness is necessary. It is not usually used at temperatures exceeding 800oF (427oC) due to quick hardening and loss of corrosion resistance. Examples of applications that use alloy 420 include:
- Cuttery
- Knife blades
- Surgical instruments
- Needle valves
- Shear blades
- Scissors
- Hand tools
STAINLESS STEEL 420 FLAT BAR CORROSION RESISTANCE:
- Less resistant than the austenitic grades and the 17% chromium ferritic alloys
- Good resistance in the hardened condition to the atmosphere, foods, fresh water, and mild acids
- Resistance lowered in the annealed condition
- Best with a smooth surface finish
STAINLESS STEEL 420 FLAT BAR HEAT RESISTANCE:
- Not recommended for use above the relevant tempering temperature because of reduction in mechanical properties
- Scaling temperature is approximately 1202oF (650oC)
STAINLESS STEEL 420 FLAT BAR WELDING:
- Not commonly welded due to air hardening characteristics.
- Welding may be performed after preheating to 300-400 F
- Post weld tempering at temperature for 2 hours
STAINLESS STEEL 420 FLAT BAR HOT WORKING:
- Recommended to bring temperatures slowly up to 1400, then on to 2000-2200 F
- Furnace cool slowly to avoid cracking, after furnace working
- Reheating is necessary to keep working temperature above 1600 F.
STAINLESS STEEL 420 FLAT BAR COLD WORKING:
- Can withstand only minor cold work.
- Radical forming operations will result in cracking.
STAINLESS STEEL 420 FLAT BAR ANEALING:
- Anneal at temperatures between 1550-1650 F (843-900 C)
- Allow for slow furnace cooling.
STAINLESS STEEL 420 FLAT BAR TEMPERING:
- Temper at temperatures of 300-400 F
- Air cool for maximum hardness and corrosion resistance.
STAINLESS STEEL 420 FLAT BAR HARDENING:
- Soak at 1850-1950 F to quench in heated oil.
STAINLESS STEEL 420 FLAT BAR CHEMICAL PROPERTIES:
| C | Mn | Si | P | S | Cr | |
|---|---|---|---|---|---|---|
| 420 | 0.15 max |
1.00 max |
1.00 max |
0.04 max |
0.03 max |
min: 12.0 max: 14.0 |
STAINLESS STEEL 420 FLAT BAR MECHANICAL PROPERTIES:
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) |
Elongation (% in 50mm) |
Hardness Brinell (HB) |
|---|---|---|---|---|
| Annealed * | 655 | 345 | 25 | 241 max |
| 399°F (204°C) | 1600 | 1360 | 12 | 444 |
| 600°F (316°C) | 1580 | 1365 | 14 | 444 |
| 800°F (427°C) | 1620 | 1420 | 10 | 461 |
| 1000°F (538°C) | 1305 | 1095 | 15 | 375 |
| 1099°F (593°C) | 1035 | 810 | 18 | 302 |
| 1202°F (650°C) | 895 | 680 | 20 | 262 |
| * Annealed tensile properties are typical for Condition A of ASTM A276; annealed hardness is the specified maximum. | ||||
STAINLESS STEEL 420 FLAT BAR PHYSICAL PROPERTIES:
| Density kg/m3 |
Thermal Conductivity W/mK |
Electrical Resistivity (Microhm/cm) |
Modulus of Elasticity |
Coefficient of Thermal Expansion µm/m/°C |
Specific Heat (J/kg.K) |
|---|---|---|---|---|---|
| 7750 | 24.9 at 212°F | 550 (nΩ.m) at 68°F | 200 GPa | 10.3 at 32 – 212°F | 460 at 32°F to 212°F |
| – at 932 °F | 10.8 at 32 – 599°F | ||||
| 17.7 at 32-1000°F |
- Width:25mm to 60mm
- Thickness:5mm to 12mm
- Finish :Hot Rolled Annealed & Pickled (HRAP)
- Length:3 to 6 Meters / 12 to 20 feet
- End Finish :Both ends are marked with special colors.
- Size tolerance:A276/484 / DIN 1028 (Full specification mentioned below)
- Packing:Bars are packed in 1000 to 1,200 kgs bundles in waterproof HDPE cloths, Standard Export Seaworthy, Marking of Sizes, Grade, Net Wt, Gross Wt, No of pieces, POD, Origin should Mentioned on Each bundles
- Marking:Size, Grade, Manufacture name on Each Bars/Pieces
- Delivery:60-75 Days from the order finalization
- Marking:Size, Grade, Manufacture name on Each Bars/Pieces
- Grades:AISI 304 / 304L, 201, 202, 316
We export our STAINLESS STEEL 420 FLAT 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.
