STAINLESS STEEL 420 COIL 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 COIL 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 COIL 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 COIL 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 COIL 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 COIL 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 COIL COLD WORKING:
- Can withstand only minor cold work.
- Radical forming operations will result in cracking.
STAINLESS STEEL 420 COIL ANEALING:
- Anneal at temperatures between 1550-1650 F (843-900 C)
- Allow for slow furnace cooling.
STAINLESS STEEL 420 COIL TEMPERING:
- Temper at temperatures of 300-400 F
- Air cool for maximum hardness and corrosion resistance.
STAINLESS STEEL 420 COIL HARDENING:
- Soak at 1850-1950 F to quench in heated oil.
STAINLESS STEEL 420 COIL 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 COIL 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 COIL 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 |
|
Harsh steel Specializes in supplying stainless steel 420 custom slit thin gauges stainless steel coils and sheets. Our Inventory includes Company specializes in supplying custom-slit thin gauge stainless steel alloys in coil and sheet form. Our inventory includes Grades such as SS 201, SS 202, SS301, SS 304, SS 304L, SS 316, SS 316L, SS 310, SS 317, SS 347, SS 410 and SS 430. Also we supply duplex and super duplex coils. We supply, stock and export stainless steel coils thicknesses from .001" to .31" thick with slitting capabilities of widths as narrow as .020" up through 36".
- Stainless Steel 420 coils Thickness Range: - 0.025mm – 4.00mm
- Stainless Steel 420 coils Width: - Soft, Half Hard, Half Hard, ¾ Hard, Full Hard & Spring Hard
- Stainless Steel 420 coils Hardness: - Minimum 3.2mm to maximum 2000mm
- Stainless Steel 420 coils Finish: - 2B, 2D, Bright Annealed, #3 Polish, #4 Polish and more
STAINLESS STEEL COIL GRADES AVAILABLE:
- Stainless Steel coils available in following grades :
304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316H, 316L, 316TI, 317, 317L, 321, 321H, 347, 347H, 409, 410, 410S, 430, 202, 201
- Nickel Alloy coils available in following grades :
such as Monel, Nickel, Inconel, Hastalloy, Copper, Aluminium, Titanium, Tantalum, Bismuth.
- Duplex & Super Duplex coils available in following grades :
S31803, S32750, S32760, S31500, S32205.
We export our STAINLESS STEEL 420 COILS 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.