Stainless Steel 420 Sheets & Plates, UNS S42000 Sheets & Plates Supplier & Exporter

STAINLESS STEEL 420 SHEETS AND PLATES 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 SHEETS AND PLATES 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 SHEETS AND PLATES 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 SHEETS AND PLATES 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 SHEETS AND PLATES 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 SHEETS AND PLATES 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 SHEETS AND PLATES COLD WORKING:

• Can withstand only minor cold work.
• Radical forming operations will result in cracking.

STAINLESS STEEL 420 SHEETS AND PLATES ANEALING:

• Anneal at temperatures between 1550-1650 F (843-900 C)
• Allow for slow furnace cooling.

STAINLESS STEEL 420 SHEETS AND PLATES TEMPERING:

• Temper at temperatures of 300-400 F
• Air cool for maximum hardness and corrosion resistance.

STAINLESS STEEL 420 SHEETS AND PLATES HARDENING:

• Soak at 1850-1950 F to quench in heated oil.

STAINLESS STEEL 420 SHEETS AND PLATES 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 SHEETS AND PLATES 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 SHEETS AND PLATES 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 Supplies and Exports Stainless steel 440 Strips from 2.5mm wide to 400mm, slit to close tolerances. We supply in below specifications:-

	STAINLESS STEEL PLATES,GRADES WITH THICKNESS AND WIDTH
Thickness Range of Stainless Plate	3/16″ Thru 6″ Thick Stainless Steel Plate
Common Widths of Stainless Plate Coil	48″ Wide – 60″ Wide – 72″ Wide – 78.75″ (2 Meter) wide – 84″ wide – 96″ wide – 120″ wide & other widths upon customer request.
200-300 Series Stainless Steel Grades	202- 301 – 304 – 304L – 304L Polished – 304H – 309 – 309S – 309H – 310 – 310S – 310H – 316L – 316L Polished – 317L – 317LMN – 321 – 321H – 330 – 347 347H
400 Series Stainless Steel Grades	405 – 410 – 410S – 416 – 420 – 440C
Duplex Stainless Steel Grades	LDX 2101 – Duplex 2205 – Duplex 2507
Precipitation Hardening Grades	17-4PH – 17-4 H1150 (per customer request) – 15-5PH
Nickel Alloy Grades	Alloy 20 – Alloy 200 – Alloy 400 – Alloy 600 – Alloy 800 – Alloy 800HT – Alloy C-276 (nickel grades may require lead time)

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