Homepage ›› Companies ›› Mavi Çelik Makina Metal San.Ve Tic.Ltd.Şti. ›› Free Cutting Steels

Mavi Çelik Makina Metal San.Ve Tic.Ltd.Şti.
Company Description Products Contact Informations Send Message

Adres: 1200. CADDE (ESKİ 29) 120-122

Tel 1: 0 (312) 394 04-70 () -71

Faks:

Email 1: haydar@mavicelik.com.tr

Email 2: info@mavicelik.com.tr

Web: http://www.mavicelik.com.tr/

Free Cutting Steels

Among the desired properties of steel material, machinability is important. During the manufacturing phase, criteria such as high cutting speeds and accordingly processing time, tool life, good surface quality, and energy savings by using lower cutting forces are directly related to material quality, along with other factors. In order to provide this quality, free cutting steels have been developed.

Free cutting steels are steels with a carbon content between 0.07 and 0.60% and a sulfur content between 0.15% and 0.40%, and a phosphorus ratio between 0.07 and 0.10%. Although it tries to reduce sulfur and phosphorus in all other grades, it is especially added to free cutting steels because it increases the machining capability. These added elements provide metallic fragility in the material and provide short brittle chip formation. In addition, the addition of sulfur and phosphorus provides a lubricating effect, increasing the strength of the part and providing a clean surface.

Free cutting steels can also be found alloyed with lead. The added lead does not change the mechanical properties of the steel, but increases its lubricating properties.

Free cutting steels also have the properties of being reformed and cemented.

CUTTING STEELS AND COMPOSITIONS
material no. DIN (OLD) DIN (NEW) SAE / AISI NS NS mn Pmax NS pb
NO HEAT TREATMENT
1.0711 9S 20 1212 0.00-0.12 0.10-0.35 0.75-1.10 0.03 0.08-0.13 –
1.0715 9 SMn 28 11SMN30 1213 0.00-0.14 0.00-0.05 0.90-1.30 0.11 0.27-0.33 –
1.0718 9 SMnPb 28 11SMNPB30 12L13 0.00-0.14 0.00-0.05 0.90-1.30 0.11 0.27-0.33 0.20-0.35
1.0736 9 SMn 36 11SMN37 1215 0.00-0.14 0.00-0.05 1.00-1.50 0.11 0.34-0.40 –
1.0737 9 SMnPb 36 11SMNPB37 12L14 0.00-0.14 0.00-0.05 1.00-1.50 0.11 0.34-0.40 0.20-0.35
CAN BE CEMENTED
1.0721 10S 20 1108 0.00-0.12 0.10-0.35 0.75-1.10 0.03 0.08-0.13 –
1.0722 10 SPb 20 11L08 0.07-0.13 0.00-0.40 0.70-1.10 0.060 0.15-0.25 0.20-0.35
CAN BE IMPROVED
1.0726 35S 20 1140 0.32-0.39 0.00-0.40 0.70-1.10 0.060 0.15-0.25 –
1.0727 45S 20 1146 0.42-0.50 0.00-0.40 0.70-1.10 0.060 0.15-0.25 –
1.0728 60S 20 – 0.57-0.65 0.10-0.30 0.70-1.10 0.060 0.18-0.25 –

MECHANICAL PROPERTIES FOR COLD-DRAWN FREEMADE STEELS
material no. DIN (OLD) DIN (NEW) SAE / AISI DO NOT PULL FLOWING RUPTURE
STRENGTH LIMIT EXTENSION
(MPa) ( ? mpa ) ( ? % )
– 10mm 10mm – 16mm – 40mm – – 10mm 10mm – 16mm – 40mm – – 10mm 10mm – 16mm – 40mm –
16mm 40mm 63mm 16mm 40mm 63mm 16mm 40mm 63mm
1.0711 9S 20 1212 540-780 490-740 460-710 390-640 410 390 355 295 7 8 9 10
1.0715 9 SMn 28 11SMN30 1213 560-800 510-760 460-710 410-660 440 410 375 305 6 7 8 9
1.0718 9 SMnPb 28 11SMNPB30 12L13 560-800 510-760 460-710 410-660 440 410 375 305 6 7 8 9
1.0736 9 SMn 36 11SMN37 1215 540-780 490-740 460-710 390-640 410 390 355 295 7 8 9 10
1.0737 9 SMnPb 36 11SMNPB37 12L14 540-780 490-740 460-710 390-640 410 390 355 295 7 8 9 10
1.0721 10S 20 1108 640-880 590-830 540-740 510-710 490 400 315 285 6 7 8 9
1.0722 10 SPb 20 11L08 740-980 690-930 640-830 610-800 570 470 375 325 5 6 7 8
1.0726 35S 20 1140 830-1080 780-1030 740-930 710-900 645 540 430 355 5 6 7 8
1.0727 45S 20 1146 560-800 540-780 490-740 430-680 440 430 390 315 6 7 8 9
1.0728 60S 20 – 560-800 540-780 490-740 430-680 440 430 390 315 6 7 8 9

MECHANICAL PROPERTIES FOR NORMAL ANNEALED FREE STEELS
material no. RELIGION SAE / AISI NORMAL ANNEALING TEMPERATURE ( °C ) DO NOT PULL FLOWING RUPTURE
STRENGTH LIMIT EXTENSION
(MPa) ( ? mpa ) ( ? % )
– 16mm 16mm – 40mm – – 16mm 16mm – 40mm – – 63
40mm 63mm 40mm 63mm
1.0711 9S 20 1212 890-920 – 350 – 350 – 350 225 215 205 25
1.0715 9 SMn 28 11SMN30 1213 890-920 – 370 – 370 – 370 235 225 215 23
1.0718 9 SMnPb 28 11SMNPB30 12L13 890-920 – 370 – 370 – 370 235 225 215 23
1.0736 9 SMn 36 11SMN37 1215 890-920 – 350 – 350 – 350 225 215 205 25
1.0737 9 SMnPb 36 11SMNPB37 12L14 890-920 – 350 – 350 – 350 225 215 215 25
1.0721 10S 20 1108 860-890 480-600 480-600 480-600 295 285 275 18
1.0722 10 SPb 20 11L08 840-870 580-700 580-700 580-700 335 325 315 14
1.0726 35S 20 1140 820-870 660-780 650-770 640-760 365 355 345 9
1.0727 45S 20 1146 890-920 – 380 – 370 – 360 235 225 215 23
1.0728 60S 20 – 890-920 – 380 – 370 – 360 235 225 215 23

APPLICATIONS OF SLOPPING STEELS
material no. RELIGION DIN (NEW) SAE / AISI USAGE PLACES
1.0711 9S 20 1212 Mass-produced parts in the automotive industry, apparatus and device construction
1.0715 9 SMn 28 11SMN30 1213 Automotive industry, widely used in mass manufacturing as a high strength free cutting steel in device and apparatus construction.
1.0718 9 SMnPb 28 11SMNPB30 12L13 Automotive industry, widely used in mass manufacturing as a high strength free cutting steel in device and apparatus construction.
1.0721 10S 20 1108 Serial parts that require cementation in the automotive industry, device apparatus and machine construction
1.0722 10 SPb 20 11L08 Better machinability with lead addition in automotive industry, device apparatus and machine building
1.0726 35S 20 1140 Medium-strength serial parts that require improvement in the automotive industry, device apparatus and machine construction
1.0727 45S 20 1146 In the automotive industry, in device apparatus and machine construction, high-strength serial parts that require improvement
1.0728 60S 20 – In the automotive industry, in device apparatus and machine construction, high-strength serial parts that require improvement
1.0736 9 SMn 36 11SMN37 1215 Serial parts that require cementation in the automotive industry, device apparatus and machine construction
1.0737 9 SMnPb 36 11SMNPB37 12L14 Serial parts that require cementation in the automotive industry, device apparatus and machine construction. lead added
Get Info
İnşaat Malzemeleri İmalat ve Satış