420/SUS420J2 Stainless Coil/Strip
420 stainless steel (UNS S42000, Japanese standard SUS420) is a high-carbon martensitic stainless steel that can obtain ultra-high hardness (HRC 50-55) through heat treatment. It is a classic material for surgical instruments, knives and wear-resistant parts. Compared with 410 stainless steel, its higher carbon content (0.15-0.40%) significantly improves hardness and wear resistance, but sacrifices some toughness and corrosion resistance.
Product Parameters
Product Name420/SUS420J2 Stainless Coil/Strip
Thickness0.3-200mm
Length2000mm / 2438mm / 3000mm / 5800mm / 6000mm / 12000mm etc.
Width40mm-600mm / 1000mm / 1219mm / 1500mm / 1800mm / 2000mm / 2500mm / 3000mm / 3500mm etc.
StandardASTM / AISI / JIS / GB / DIN / EN
SurfaceBA / 2B / NO.1 / NO.4 / 4K / HL / 8K etc.
CertificateISO / SGS / BV
Production TechnologyHot rolling / cold rolling
Edge TreatmentEdge grinding / trimming

Corresponding Standards

EUUSAGermanyJapanFranceEnglandItalyChinaSwedenPolandCzechiaRussia
ENASTMDIN,WNrJISAFNORBSUNIGBSSPNCSNGOST
X30Cr13 (1.4028)420X30Cr13SUS420J2Z30Cr13420S45X30Cr133Cr1323043H131702330KH13



Z33C13


Mar-043H14

Chemical Composition

EUUSAGermanyJapanFranceEnglandItalyChinaSwedenPolandCzechiaRussia
ENASTMDIN,WNrJISAFNORBSUNIGBSSPNCSNGOST
X30Cr13 (1.4028)420X30Cr13SUS420J2Z30Cr13420S45X30Cr133Cr1323043H131702330KH13



Z33C13


Mar-043H14

Mechanical Properties

EUUSAGermanyJapanFranceEnglandItalyChinaSwedenPolandCzechiaRussia
ENASTMDIN,WNrJISAFNORBSUNIGBSSPNCSNGOST
X30Cr13 (1.4028)420X30Cr13SUS420J2Z30Cr13420S45X30Cr133Cr1323043H131702330KH13



Z33C13


Mar-043H14

Application Scope

(1) Medical and surgical instruments

Surgical tools: scalpels, scissors, bone chisels (need to be mirror polished to Ra ≤ 0.2μm).

Dental instruments: dental drills, tweezers (resistant to disinfectant corrosion).


(2) Knives and cutting tools

High-end kitchen knives: Japanese Santoku knives, Western chef knives (hardness HRC 54-56).

Industrial knives: plastic crushing knives, leather cutting knives (wear resistance requirements).


(3) Machinery and industry

Bearing components: low-load bearing balls (replace 440C to reduce costs).

Pump valve parts: bushings, sealing rings (resistant to water vapor corrosion + wear resistance).


(4) Daily use and art

Razor blades: traditional double-sided razors (high hardness + sharp edge retention).

Engraving tools: metal engraving knives (regular rust prevention maintenance is required).


(5) Other special applications

3D printing: Pre-alloyed powder for selective laser melting (SLM) (subsequent heat treatment is required).


Product Display

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Product Application

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Product Packaging

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Factory Display
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FAQ

Q:Can I get samples before order ?

A:Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.

Q:Can I go to your factory to visit?

A:Of course, we welcome customers from all over the world to visit our factory.

Q:How can I get a quotation from you ?

A:You can leave us message, and we will reply every message in time. Or we may talk on line.

Q:What product information do I need to provide?

A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Q:Does the product have quality inspection before loading?

A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept the third party inspection absolutely.

Q:What are the advantages of your company?

A:(1)More Than 30 year's Experience

(2)The company is a modern steel enterprise group integrating precision manufacturing, spot warehousing, international logistics, and product deep processing.

(3)World-class production equipment, product quality that meets international certifications, and timely and thoughtful after-sales service

(4)Never stop product research and development and innovation to create high-quality products that meet the global standards.

(5)Integrity business philosophy, the highest quality products, the most reasonable prices, and a global marketing network.

Q:How do we trust your company?

A:We specialise in steel business for years as golden supplier on Alibaba, headquarter locates in liaocheng, Shandong province, you are welcome to investigate in any ways, by all means, you could place an order in Alibaba with trade assurance which could secure your payment.

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