11SMnPb37, DIN-EN 1.0737, Free Cutting Steel

11SMnPb37, DIN-EN 1.0737, Free Cutting Steel
STEELMAX Steel Story

DIN-EN 1.0737, 11SMnPb37 은 납 쾌삭강으로
AISI 12L14 (UNS No G12144)와 서로 대응 가능합니다.

Pb 0.15~0.35 합금 Pb 쾌삭강은, Pb (Lead)가
강재 결정과 결정 사이의 경계 면에 있도록 해,

피 절삭성을 높여, 고속 절삭에 적합형 합금강재로
P, S 를 많게 하거나, Pb, Zr, Se 를 합금 해 절삭성을 향상 시킵니다.

Chemical composition(%)		C	Si	Mn	P	S	Pb
Chemical composition(%)		0.14 max	0.05 max	1.00~1.50	0.11 max	0.34~0.50	0.20~0.35
Mechanical properties	EN10277-3, 1.0737	+SH		+C
		Thickness	HBW	Rm	Rp0.2	Rm	A
		≥5≤10	–	–	440	510~810	6
		≥10≤16	–	–	410	490~760	7
		≥16≤40	112~169	380~570	375	460~710	8
		≥40≤63	112~169	370~570	305	400~650	9
		≥63≤100	107~154	360~520	245	360~630	9
	EN10087, 1.0737	Hot rolled bars and rods			Rm : Tensile strength, Rp0.2 : 0.2% Proof strength, A : Elongation
		≥5≤10	–	380~570
		≥10≤16	–	380~570
		≥16≤40	112~169	380~570	+SH : As rolled and turned, +C : Cold drawn
		≥40≤63	109~169	370~570
		≥63≤100	107~154	360~520

※ Drawn products
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.

※Turned products
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.