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Semiconductor Raw Material：

1）316L Ultra-Pure Stainless Steel AISI 316L

Smelting Method	(*ppm) Chemical composition of ultra-high purity materials
	元素	C	Si	S	Mn	P	Cu	Cr	Ni	Mo	O*	N*	H*
	SEMI F20	≤0.030	≤1.00	≤0.01	≤1.50	≤0.045	≤0.3	16.0～18.0	10.0～15.0	2.0～3.0	/	/	/
(VIM+ VAR)	SQ316L-Ⅰ	0.005	0.2	0.001	0.6	0.003	0.010	17.7	14.80	2.70	8	30	1
(VOD+ VAR)	SQ316L-Ⅱ	0.008	0.3	0.001	0.7	0.015	0.15	17.2	14.70	2.52	10	60	2
(EAF+ VOD+LF)	SQ316L-Ⅲ	0.011	0.38	0.006	0.9	0.02	0.19	16.70	13.6	2.13	30	120	3
(EAF+ VOD)	SQ316L-Ⅳ	0.021	0.42	0.007	0.9	0.02	0.25	16.15	10.08	2.13	40	150	5

Principal Component Ratio(mass%)

Applications:Widely used in the manufacture of semiconductor products, ultra-high vacuum valve devices, filter housings and other stainless steels that require ultra-clean and ultra-low gas components.

Key Technology: special smelting of VIM+VAR is used to reduce "non-metallic inclusion & gas composition "  in the production of materials .

Nonmetallic Inclusions：

Grade	ASTM-D法（Worst Thin）
	0.5            1.0           1.5            2.0             2.5       (級(jí))
SQ316L-Ⅰ
SQ316L-Ⅱ
SQ316L-Ⅲ
SQ316L-Ⅳ

Ⅱ.Bright Annealed Precision Tube

Designation: TP304L, TP316L ETC

Standards: ASTM A269,ASTM A213,GB13296, JIS G3459

Size:

Technical Reference：

1.Ordinary BA Tube：

Raw materials are from WALSIN、YONGXING、Baosteel,TISCO

Inner surface roughness＜Ra0.4um,

Package:loose package deburring at both side.

2.Clean BA Tube:

Raw materials are imported from overseas or domestic vacuum metling (VIM)

Inner surface roughness＜Ra0.3um

Package: each pipe with plastic bag & cap, plan end

3.Ultra-Pure BA Tube:

Raw materials are imported or domestic vacuum metling(VIM+VAR).

Inner surface roughness＜Ra0.2um,clean wash.

Package :both end with caps and plastic bags after clearing & fulled with nitrogen gas in dust-fress room