S355J2C+C, Drawn R-Bar, Bright Bar, h9

S355J2C+C, Drawn R-Bar, Bright Bar, h9
STEELMAX Steel Story

S355J2C 재질은 Bright Steel 로, 일반적인 엔지니어링 목적용
Drawn, Turned or Ground 조건의 EN 10277-2 규정의 재질입니다.

EN 10277-2 규정에 S355J2C 재질은 +C : Cold Drawn (냉간 인발)
조건인 경우 S355J2C +C 로 Steel Symbol 을 나타내고

S355J2C +SH 로 표시되는 경우는 As rolled + Turned 인 경우가 있으며
표면의 공차 정도는 EN 10278 규정의 tolerance 가 있습니다.

소성 변형을 발생하는 냉간 압연과 냉간 인발의 가공 경화 효과로
Diameter 16mm 이하인 경우 420MPa minimum 의 고강도 환봉입니다.

※ Turned products (Lathe turning : 旋削 : 선삭 제품) : Symbol +SH (DIN-EN)
Round bars products by turning on a lathe where the products
can be further processed by straightening and polishing.
This operation gives the bar special features with respect to shape,
dimensional accuracy and surface finish.
The removal of metal is carried out in such a way that the bright
product is generally free from rolling defects and surface decarburization.
For technical reasons some bars ordered as hot rolled products may be
delivered roughly turned(peeled), nevertheless such products are
treated as hot rolled products and not as bright products.

※ Drawn products (인발 제품, 引拔) : Symbol +C (DIN-EN)
Products of various cross section shapes obtained, after descaling,
by drawing of hot rolled bars or rod on a draw bench
(cold deformation without removing material)
This operation gives the product special features with respect to shape,
dimensional accuracy and surface finish.
In addition, the process causes cold working of the product.
which can be eliminated by subsequent heat treatment.
Products in lengths are delivered straightened regardless of size.

EN 10277-2, S355J2C, 1.0579, Bar
Chemical composition (%)	Carbon (C)	0.20 max
	Silicon (Si)	0.55 max
	Manganese (Mn)	1.60 max
	Phosphorus (P)	0.030 max
	Sulfur (S)	0.030 max
	Copper 9Cu)	0.55 max

Cold Drawn (+C)
Thickness (mm)	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)
5≤d≤10	520	630~950	6
10＜d≤16	450	580~880	7
16＜d≤40	350	530~850	8
40＜d≤63	335	500~770	9
63＜d≤100	315	470~740	9

EN 10278, Tolerance class to ISO 286-2
mm	h6	h7	h8	h9	h10	h11	h12
＞1 to≤3	0.006	0.010	0.014	0.025	0.040	0.060	0.100
＞3 to≤6	0.008	0.012	0.018	0.03	0.048	0.075	0.120
＞6 to≤10	0.009	0.015	0.022	0.036	0.058	0.090	0.150
＞10 to≤18	0.011	0.018	0.027	0.043	0.070	0.110	0.180
＞18 to≤30	0.013	0.021	0.033	0.052	0.084	0.130	0.210
＞30 to≤50	0.016	0.025	0.039	0.062	0.100	0.160	0.250
＞50 to≤80	0.019	0.030	0.046	0.074	0.120	0.190	0.300
＞80 to≤120	0.022	0.035	0.054	0.087	0.140	0.220	0.350
＞120 to≤180	0.025	0.040	0.063	0.100	0.160	0.250	0.400
＞180 to≤200	0.029	0.046	0.072	0.115	0.185	0.290	0.460
For example a 20mm nominal diameter having a tolerance class h9 is 20mm+0, -0.052mm or 19.948/20.000mm