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420 Stainless Steel Coil

Name: 420 Stainless Steel Coil
Brand: Ironex China
SKU: 420

Prime Mill Grade | Certified China Exporter & Factory Direct Supply

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Origin: China (Mill Direct) China Steel Exporter EN 10204 3.1 MTC

420 Stainless Steel Coil - Technical Overview & Specifications

420 is a hardenable martensitic stainless steel that contains at least 12% chromium, just enough to provide corrosion resistance. It has good ductility in the annealed condition, but can be hardened to a minimum Rockwell hardness of 50 HRC, which is the highest hardness in the 12% chromium scale. Due to its hardening properties, 420 are not often welded, although this is possible. Martensitic stainless steel is designed for high hardness, and sometimes other properties will be affected to a certain extent. The corrosion resistance is lower than that of ordinary austenite grades, and its effective operating range is limited by its ductility loss at sub-zero temperatures and strength loss due to excessive tempering at high temperatures. The best corrosion resistance is obtained when the metal is hardened and subjected to surface grinding or polishing.

Product Parameters

Product Name	420 Stainless Steel Coil
Type	Steel Coil
Thickness	2.5mm-10.0mm
Length	2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc.
Width	610mm-2000mm
Standard	ASTM, AISI, JIS, GB, DIN, EN, etc.
Surface	BA, 2B, NO.1, NO.4, 4K, HL, 8K, etc.
Scope of Application	Widely used in high temperature and electrical industry, medical equipment construction, chemical, food industry, agriculture and ship parts, food and beverage packaging, Kitchen supplies, trains, airplanes, conveyor belts, vehicles, bolts, nuts, springs and screens, etc.
Certificate	ISO, SGS, BV, etc.
Production Technology	Hot Rolling, Cold Rolling
Edge Processing	Edging, Trimming

Chemical Composition

C	Si	Mn	Cr	S	P
≤ 0.15	≤1.0	≤1.0	12.0～14.0	≤ 0.03	≤ 0.04

Mechanical Properties

Tensile Strength Kb (MPa)	Yield Strength σ0.2 (MPa)	Elongation D5 (%)	Hardness
≥ 634	≥ 440	≥ 20	Annealing ≤ 223HB; quenching and tempering ≥ 192HB

Physical Performance

Density( g/cm³ )	Modulus of Elasticity( Gpa )	Coefficient of Thermal Expansion( 10 -6 /°C )	Coefficient of Thermal Conductivity( W/m * K )	Resistivity( ΜΩ. cm )
7 .74	200	10.2	24.9	55

International Standard Grade Comparison

No	China	Japan	USA	South Korea	Germany	India	Australia	Taiwan, China
	GB	JIS	ASTM	UNS	KS	DIN	BIS	AS	CNS
Austenitic stainless steel
1	12Cr17Mn6Ni5N	SUS201	201	S20100	STS201	1.4372	10Cr17Mn6Ni4N20	201-2	201
2	12Cr18Mn9Ni5N	SUS202	202	S20200	STS202	1.4373	-	-	202
3	12Cr17Ni7	SUS301	301	S20200	STS301	1.4319	10Cr17Ni7	301	301
4	06Cr19Ni10	SUS304	304	S30400	STS304	1.4301	07Cr18Ni9	304	304
5	022Cr19Ni10	SUS304L	304L	S30403	STS304L	1.4306	02Cr18Ni11	304L	304L
6	06Cr19Ni10N	SUS304N1	304N	S30451	STS304N1	1.4315	-	304N1	304N1
7	06Cr19Ni9NbN	SUS304N2	XM21	S30452	STS304N2	-	-	304N2	304N2
8	022Cr19Ni10N	SUS304LN	304LN	S30453	STS304LN	-	-	304LN	304LN
9	10Cr18Ni12	SUS305	305	S30500	STS305	1.4303	-	305	305
10	06Cr23Ni13	SUS309S	309S	S30908	STS309S	1.4833	-	309S	309S
11	06Cr25Ni20	SUS310S	310S	S31008	STS310S	1.4845	-	310S	310S
12	06Cr17Ni12Mo2	SUS316	316	S31600	STS316	1.4401	04Cr17Ni12Mo2	316	316
13	06Cr17Ni12Mo2Ti	SUS316Ti	316Ti	S31635	-	1.4571	04Cr17Ni12MoTi20	316Ti	316Ti
14	022Cr17Ni12Mo2	SUS316L	316L	S31603	STS316L	1.4404	~02Cr17Ni12Mo2	316L	316L
15	06Cr17Ni12Mo2N	SUS316N	316N	S31651	STS316N	-	-	316N	316N
16	022Cr17Ni13Mo2N	SUS316LN	316LN	S31653	STS316LN	1.4429	-	316LN	316LN
17	06Cr18Ni12Mo2Cu2	SUS316J1	-	-	STS316J1	-	-	316J1	316J1
18	022Cr18Ni14Mo2Cu2	SUS316J1L	-	-	STS316J1L	-	-	-	316J1L
19	06Cr19Ni13Mo3	SUS317	317	S31700	STS317	-	-	317	317
20	022Cr19Ni13Mo3	SUS317L	317L	S31703	STS317L	1.4438	-	317L	317L
21	06Cr18Ni11Ti S	SUS321	321	S32100	STS321	1.4541	04Cr18Ni10Ti20	321	321
22	06Cr18Ni11Nb	SUS347	347	S34700	STS347	1.4550	04Cr18Ni10Nb40	347	347
Duplex stainless steel
1	-	SUS329J1	329	S32900	STS329J1	1.4477	-	329J1	-
2	022Cr23Ni5Mo3N	-	S32205	F60	-	1.4462	-	2205	2205
3	022Cr25Ni7Mo4N	-	S32750	F53	-	1.4410	-	2507	2507
Ferritic stainless steel
1	06Crl3Al	SUS405	405	S40500	STS405	1.4002	04Cr13	405	405
2	022Cr11Ti	SUH409	409	S40900	STS409	1.4512	-	409L	409L
3	022Cr12	SUS410L	-	-	STS410L	-	-	410L	410L
4	10Cr17	SUS430	430	S43000	STS430	1.4016	05Cr17	430	430
5	10Cr17Mo	SUS434	434	S43400	STS434	1.4113	-	434	434
6	022Cr18NbTi	-	-	S43940	-	1.4509	-	439	439
7	019Cr19Mo2NbTi	SUS444	444	S44400	STS444	1.4521	-	444	444
Martensitic stainless steel
1	12Cr12	SUS403	403	S40300	STS403	-	-	403	403
2	12Cr13	SUS410	410	S41000	STS410	1.4006	12Cr13	410	410
3	20Cr13	SUS420J1	410	S42000	STS420J1	1.4021	20Cr13	420	420J1
4	30Cr13	SUS420J2	-	-	STS420J2	1.4028	30 Cr13	420J2	420J2
5	68Cr17	SUS440A	440A	S44002	STS440A	-	-	440A	440A

Product Features & Advantages

Manufactured to ASTM, AISI, JIS, GB, DIN, EN, etc. with strict dimensional tolerance and surface quality
Reliable Stainless Steel Coil solution for construction, machinery and industrial projects
Custom processing available: cutting, bending, decoiling, slitting and surface polishing
Mill Test Certificate (MTC) and full inspection provided

Applications & Industries

Widely used in high temperature and electrical industrymedical equipment constructionchemicalfood industryagriculture and ship partsfood and beverage packagingKitchen suppliestrainsairplanesconveyor beltsvehiclesboltsnutssprings and screensetc.

Scope of Application

Widely used in high temperature and electrical industry, medical equipment construction, chemical, food industry, agriculture and ship parts, food and beverage packaging, Kitchen supplies, trains, airplanes, conveyor belts, vehicles, bolts, nuts, springs and screens, etc.