Goods List-WAN4 Jewelry

Quality Grade			AAAAA		AAAAA		AAAAA		AAAAA		AAAAA
Material	Stainless Steel		201	301	301	304	304L	316	316	316L	316L
	Chemical Composition	C	≤ 0.15%	≤ 0.15%	≤ 0.15%	≤ 0.08%	≤ 0.03%	≤ 0.08%	≤ 0.08%	≤ 0.03%	≤ 0.03%
		Si	≤ 0.75% ~ 1%	≤ 1%	≤ 1%	≤ 1%	≤ 1%	≤ 1%	≤ 1%	≤ 1%	≤ 1%
		Mn	5.5% ~ 7.5%	≤ 2%	≤ 2%	≤ 2%	≤ 2%	≤ 2%	≤ 2%	≤ 2%	≤ 2%
		P	≤ 0.06%	≤ 0.035%	≤ 0.035%	≤ 0.035%	≤ 0.045%	≤ 0.045%	≤ 0.045%	≤ 0.045%	≤ 0.045%
		S	≤ 0.03%	≤ 0.03%	≤ 0.03%	≤ 0.03%	≤ 0.03%	≤ 0.03%	≤ 0.03%	≤ 0.03%	≤ 0.03%
		Ni	3.5% ~ 5.5%	6% ~ 8%	6% ~ 8%	8% ~ 10.5%	8% ~ 12%	10% ~ 14%	10% ~ 14%	10% ~ 14%	10% ~ 14%
		Cr	16% ~ 18%	16% ~ 18%	16% ~ 18%	18% ~ 20%	18% ~ 20%	16% ~ 18%	16% ~ 18%	16% ~ 18%	16% ~ 18%
		Mo						2% ~ 3%	2% ~ 3%	2% ~ 3%	2% ~ 3%
		N	≤ 0.25%
	Hypoallergenic（Nickel release： Excessive nickel release may cause allergies or skin irritation,high nickel content does not necessarily trigger allergies.）	Nickel Release Standard	Limit values（EU REACH，US CPSIA）：Jewelry ≤ 0.5（µg/cm²/week）；Piercing items ≤ 0.2（µg/cm²/week）
		Raw Surface	2.0-8.0	1.0-4.5	1.0-4.5	0.2-0.8	0.1-0.5	0.05-0.3	0.05-0.3	0.03-0.2	0.03-0.2
		Polished	1.5-6.5	0.8-3.8	0.8-3.8	0.1-0.6	0.1-0.4	0.02-0.2	0.02-0.2	0.01-0.15	0.01-0.15
		Brushed	1.8-7.0	0.9-4.2	0.9-4.2	0.2-0.7	0.1-0.4	0.03-0.25	0.03-0.25	0.02-0.18	0.02-0.18
	Corrosion Resistance（Salt Spray Test：24 hours ≈ 6–12 months in normal exposure）	24 hours	Minor rust spots	Minor rust spots	Minor rust spots	No change	No change	No change	No change	No change	No change
		48 hours	Visible rust stains	Small rust patches	Small rust patches	Individual pitting corrosion	No change	No change	No change	No change	No change
		72 hours	Extensive rust	More rust patches	More rust patches	Slight pitting corrosion	Slight rust	No corrosion	No corrosion	No corrosion	No corrosion
		96 hours	Structural damage	Structural damage	Structural damage	Rust spots	Mild stains	Thin oxide layer	Thin oxide layer	Thin oxide layer	Thin oxide layer
		168 hours	Severe corrosion	Significant corrosion	Significant corrosion	Localized corrosion	Mild corrosion	Stable oxide film	Stable oxide film	Stable oxide film	Stable oxide film