No. 429, Yangguang Road, Yinzhou District, Ningbo, Zhejiang, China P.C.: 315175

Original Series Grade-J4

nikon j4 stainless steel


J4 Grade is a chromium-manganese austenitic stainless steel with moderate amounts of copper, nickel and nitrogen. Balancing of the alloying elements produces an austenitic structure in the annealed condition. Type J4 is suitable for replacing chromium-nickel grades 301, 304 in many applications. Lowercost manganese and nitrogen additions render this grade more economical while endowing it with good strength and high formability making it highly suitable for a wide variety of consumer and structural applications.

J4 is 50% stronger than 304 as well as 430! J4 also exhibits superior wear and abrasion resistance than 304/430. The main difference between J4 & 304 is the difference in their chemistries, especially the percentage of Ni. 304 contains a minimum of 8% Ni and J4 has a minimum of only 1% Ni. The chromium content is also slightly lower, but as seen from the PRE, this is compensated to a large extent by increased nitrogen.



Stainless Steel Sheet,Stainless Steel  Strip,Stainless Steel Tube



The company independently researches and develops products.



Typical applications for Types J4 are Automotive trim and molding/Difficult-to-form  exhaust-system components, tubular manifolds,  mufflers/Exhaust manifold and other exhaust-system  components, catalytic converter shells, clamps. Construction: Gutters and downspouts, roofing, siding. Power generation: Heat Exchanger tubing.



Type J40.12x8.5~130.015X0.045x0.75 x14 – 161.0~2.0



TypeYield Strength 0.2% offset (KSI)Tensile Strength (KSI)% Elongation (2″ Gauge length)Hardness rockwell B
J4325 min650 min40 min.100 max



Presence of copper in this steel reduces work hardening rate. The alloy is non-magnetic in annealed condition and like 304 becomes lightly magnetic after cold working due to formation of martensite. Thus J4 can display a wide range of mechanical strength depending on the degree of cold working, which is essential for certain structural applications.



For heavy duty operation

Sturdy build

Excellent service life and heat-resistant

Non corrosive & heat resistant



Type J4 is resistant to a wide variety of mild to moderately corrosive environments.

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