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Alloy 420 is a hardenable, martensitic stainless steel that is an alteration of Alloy 410. Alloy 420 has higher carbon content than Alloy 410 which is intended to advance quality and hardness attributes. It has great malleability it the strengthened condition yet is equipped for being solidified up to Rockwell hardness 50 HRC, the most elevated hardness of the 12% chromium grades. Because of its solidifying properties, Alloy 420 is not regularly welded, in spite of the fact that it is conceivable. Martensitic stainless steels are intended for high hardness and here and there different properties are to some degree bargained. Erosion resistance is lower than the basic austenitic evaluations and their valuable working reach is restricted by their loss of malleability at below zero temperatures and loss of quality by over-treating at hoisted temperatures. Its best erosion resistance is accomplished when the metal is solidified.

Stainless Steel 420 Sheet Sizes

Steel grades	AISI420 (1.4021)
Production	Cold-rolled
Standard	ASTM A240/A480
Thickness	Min: 0.4mm Max: 6.0mm
Width	1000mm, 1250mm, 1500mm, 2000mm, Other sizes on request
Finish	2B, BA, MATT, M.PVC, N4, N5, SB, HR, N8, Oil base wet polished, Both sides polished available
Coating	PVC coating normal/laser Film: 100 micrometer Color: black/white
Package weight	1.0-2.2 tonnes
Application	Medical equipment, Food industry, Construction material, Kitchen utensils, BBQ grill, Building construction, Electric equipment,

Stainless Steel 420 Coil Sizes

Steel grades	AISI420 (1.4021)
Production	Cold-rolled, Hot-rolled
Standard	ASTM A240/A480
Thickness	Min: 0.4mm Max: 10.0mm
Width	1000mm, 1250mm, 1500mm, 2000mm, Other sizes on request
Finish	1D, 2B, BA, N4, N5, SB, HL, N8,Oil base wet polished, Both sides polished available
Coating	PVC coating normal/laser Film: 100 micrometer Color: black/white
Package weight (cold-rolled)	1.0-10.0 tonnes
Package weight (hot-rolled)	Thickness 3-6mm: 2.0-10.0 tonnes Thickness 8-10mm: 5.0-10.0 tonnes
Application	Medical equipment, Food industry, Construction material, Kitchen utensils, BBQ grill, Building construction, Electric equipment,

Stainless Steel 420 Plates Sizes

Steel grades	AISI420 (1.4021)
Production	Hot-rolled
Standard	ASTM A240/A480
Thickness	Standard: 3.0mm-30.0mm Over 30.0mm on request
Width	1000mm, 1250mm, 1500mm, 2000mm, Other sizes on request
Package weight	1.0-4.0 tonnes
Application	Medical equipment, Food industry, Construction material, Kitchen utensils, BBQ grill, Building construction, Electric equipment,

Chemical Composition

Grade	C	Mn	Si	P	S	Cr
420	Min. max.	0.15 -	- 1	- 1	- 0.040	- 0.03	12.0 14.0

Grade

420

Min.

max.

0.15

0.040

0.03

12.0

14.0

Mechanical Properties

Tempering Temperature (°C)	Tensile Strength (MPa)	Yield Strength 0.2% Proof (MPa)	Elongation (% in 50mm)	Hardness Brinell (HB)	Impact Charpy V (J)
Annealed *	655	345	25	241 max	-
204	1600	1360	12	444	20
316	1580	1365	14	444	19
427	1620	1420	10	461	#
538	1305	1095	15	375	#
593	1035	810	18	302	22
650	895	680	20	262	42
* Annealed tensile properties are typical for Condition A of ASTM A276; annealed hardness is the specified maximum. # Tempering of this steel should be avoided in the range 425-600°C

Physical Properties

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of thermal Expansion (m/m/0C)			thermal Conductivity (W/m.K)		Specific Heat 0-1000C (J/kg.K)	Electrical Resistivity (n.m)
Grade	Density (kg/m3)	Elastic Modulus (GPa)	0-1000C	0-3150C	0-5380C	at 1000C	at 5000C	Specific Heat 0-1000C (J/kg.K)	Electrical Resistivity (n.m)
420	7800	200	10.3	10.8	11.7	24.9	-	460	550