CHUNG HUNG STEEL CORPORATION Introduction of Fine Blanking & Formability Steel HUNG LI STEEL CORPORATION
Productive Facilities Continuous pickling line Oiling and inspection of CPL Batch Annealing Furnace for Spheroidizing Anneal Rolling Mill for gauge control Reversing type Cold Rolling mill Tension Leveler
1. Products Introduction Fine Blanking & Formability Steel (FBFS) has wide range of chemical compositions from low carbon steel to middle/high carbon steel and various low-alloyed steels. Beyond the precise conditions of die in following working, when the material produced as steel sheet, the process must be capable to control accurate thickness and good formability, then introduced to versatile fine-blanking applications, such as automobile transmission components, safety critical automotive components, locking systems, interior seat adjusters, braking systems, automated machinery parts and also electronic component categories, door locks etc.. The materials can be fine-blanked with smooth cut edges, so debarring can be eliminated. Manufacturers can obtain products with value-added and cost down. Motorcycle starter component S45C Recliner component SCM415 Although the materials usually dropped in hot rolled gauge range, however they need more function advantages than cold rolled steel. The main quality characteristics includes following: (1) Precise thickness control: can meet the requirement of the die set-up in Fine Blanking operation. The key factor is the achievement within several hundredth mm gauge difference either in rolling or transverse direction in the sheet, no matter what sheet gauge is. (2) Formability: steel grades with high carbon equivalent are difficult in forming process, but the work piece need the workability to be a high quality product, and then the steel matrix with good spheroidized carbide can contribute the feature. (3) Hardenability: because of the carbon equivalent of steel, the material has sufficient hardenability if heat treatment after mechanical working provided. 1
2. Manufacturing process of FBFS products The Manufacturing Flow Chart of Fine Blanking & Formability Steel Slab casting Hot Rolling Pickling Products Inspecting, Oiling and Sampling Gauge control Spheroidizing Anneal 3. Quality Characteristics (1) Comparison of typical Mechanical properties Symbol of Class Yield Strength (MPa) Tensile Strength (MPa) Elongation (%) Hardness (HRb) EN 10132 16MnCr5 JIS G4053 SCM435 JIS G4051 S55C HR 470 625 25 87~95 FBFS 310 460 36 72~82 HR 400 680 24 88~95 FBFS 372 560 30 80~85 HR 520 870 19 100~104 FBFS 350 530 30 78~85 HR: Hot Rolled Coil FBFS: Fine Blanking & Formability Steel 2
(2) Optical Metallography (Spheroidized ratio 90%) a. 16MnCr5 10μ m 10μ m Hot - Rolled 1000x Carbides Spheroidized 1000x b. JIS G4053 SCM435 10μ m 10μ m c. JIS G4051 S55C Hot - Rolled 1000x Carbides Spheroidized 1000x 10μ m 10μ m Hot - Rolled 1000x Carbides Spheroidized 1000x 3
(3) Bending Test a. Bending Test of Hot-Rolled JIS G4051 S55C Steel Sheet(r = 0 t) Fig. 1a broken Bend Surface Fig.1b broken Bend profile b. Bending Test of Spheroidized JIS G4051 S55C Steel Sheet. (r = 0 t) Fig. 2a Bend Surface without Crack Fig. 2b Bend profile without crack 4
(4) Gauge Accuracy a. Gauge chart in rolling direction (a)16mncr5 Thickness: 5.03 mm Width: 1,060mm 3.95mm (b)scm435 Thickness: 5.02 mm Width:950mm (c)s55c Thickness: 2.91 mm Width: 940mm b. Profile in width direction (a)16mncr5 Thickness: 5.03 mm Width: 1,060mm (b)scm435 Thickness: 5.02 mm Width:950mm (c)s55c Thickness: 2.91 mm Width: 940mm 5
4. Available Specification for FBFS Products Item JIS Steel grade SAE Thickness (mm) Yield Strength (MPa) Mechanical properties Chemical composition (%) Tensile strength (MPa) Elongation Hardness (%) (HRB) 1 SPHD 4.5 260 360 38 41~51 0.10 max. 2 S15C 3 S20C 4 S35C 5 S45C 6 S50C 7 S55C 8 SCM415 9 SCM435 5.09 300 440 35 63~73 0.13 5.10~6.00 280 430 35 63~73 0.18 5.09 320 470 35 65~75 0.18 5.10~6.00 300 460 35 65~75 0.23 5.09 360 530 27 71~81 0.32 5.10~6.00 330 520 30 71~81 0.38 5.09 440 580 27 76~86 0.42 5.10~6.00 430 570 27 75~85 0.48 5.09 450 595 27 76~86 0.47 5.10~6.00 440 585 27 75~85 0.53 5.09 460 600 27 76~86 0.52 5.10~6.00 450 590 27 75~85 0.58 5.09 400 525 28 70~80 0.13 5.10~6.00 350 500 31 72~82 0.18 5.09 455 590 27 75~85 0.33 5.10~6.00 425 570 27 75~85 0.38 5.09 485 620 25 77~87 0.55 10 SAE1060 5.10~6.00 465 610 27 77~87 0.65 5.09 380 570 27 75~85 0.30 11 SAE1536 5.10~6.00 340 540 29 75~85 0.37 5.09 450 590 25 75~85 0.28 12 SAE4130 5.10~6.00 410 560 29 75~85 0.33 Item 13 JIS Steel grade SAE Thickness (mm) Yield Strength (MPa) C Mn Si P S Cr Mo Ni 0.50 max max 0.030.025 max 0.025 max 0.30 0.30 0.90 0.90 0.90 0.90 0.90 0.90 0.90 1.20 1.50 0.40 0.35 0.35 0.35 0.35 0.35 0.35 0.03 0.035 max. max. 0.03 0.035 max. max. 0.03 0.035 max. max. 0.03 0.035 max. max. 0.03 0.035 max. max. 0.03 0.035 max. max. 0.03 0.0300.90 0.35 max. max. 1.20 0.030 0.03 0.90 0.35 max. max. 1.20 0.35 -- 0.03 0.05 max. max. 0.04 0.05 max. max. 0.0350.0400.80 0.35 max. max. 1.10 Mechanical properties Chemical composition (%) JIS SAE 5.09 360 515 29 72~82 0.14 16MnCr5 5.10~6.00 325 490 32 72~82 0.19 Yield Strength (MPa) 1.00 1.30 Other steel grades are available, please contact sales department. JIS SAE 0.400.0350.0350.80 max max. max. 1.10 - - - - - - - - - - - - - - - - - - - - - 0.25 0.30 0.25 max -0.25 max - - - 0.25 Yield Strength (MPa) - - - - 6
5. Product Size Ranges (1) C.E. 0.50 SPHD/S15C/S20C /S35C (800,6.0) (800,5.0) (610,4.0) (1219,6.0) (1219,5.0) Feasible range Manufacturing range (610,1.8) (800,2.5) (1219,2.5) (1219,1.8) (2) 0.50<C.E.< 0.80 SCM415/S45C/S50C/16MnCr5 S55C/SAE1060/SCM435 (800,6.0) (1219,6.0) (800,6.0) (1050,6.0) (800,5.0) (610,4.0) (1219,5.0) (800,5.0) (1050,5.0) (610,4.0) (800,2.5) (1219,2.5) (800,3.0) (1050,3.0) (610,1.8) (1219,1.8) (610,1.8) (1050,1.8) Carbon Equivalent (C.E.): C.E.(%)=C + Mo/4 + Cr/5 + Mn/6 + V/14 + Si/24 + Ni/40 7
6. Product Packing (1) Packing for export Indication Label Identification label Inner edge protector Outer Edge protector Lateral plate Packing strip and seal Inside iron sheet Outside iron sheet (2)Packing for domestic Indication label Identification label Inner edge protector Outer edge protector Packing strip and seal Antirust wrapping paper 8
7. Product Labeling (1) Domestic Sample (2) Export Sample 9
8. Ordering Information Because the applications are critical, we hope all the features of FBFS meet customer s requirement, please carefully confirm the following items when ordering: Item Specification Scope 1 Product Fine Blanking & Formability Steel 2 Standard and Steel grades JIS G4053 SCM435. 3 Dimensions(Thickness Width) 5.00 mm 930 mm 4 Order amount 100 tones 5 Roll edge finish Cut Edge 6 Oiling Medium 7 Carbide spheroidized ratio 90% above 8 Packing weight 6 ~ 12 metric tonnes 9 Inside diameter of coil 610mm 10 Usage Purpose Seatbelt Locking clip and Strap 11 Delivery date By request and marine date 12 Label and packing requirement According to CHS standard 13 Dimension Tolerance Thickness of Order ± 0.05mm 14 Special requirement. If any Please contact sales department 10
9. Quality Assurance Hung Li Steel Corporation (HLS) has implemented an efficient quality assurance system who has achieved ISO 9001:2008 Quality System in December 2010. (Approved by Bureau of Standards, Metrology & Inspection, M.O.E.A., R.O.C) 11
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10. National Standard Steel Grade comparison Table JAPAN CHINA USA EUROPE JIS GB AISI/SAE EN G4051 - - EN 10084 S10C 10 1010 C10/C10E / C10R S15C 15 1015 C15/C15E / C15R Machine Structure Steels S20C 20 1020 C22/C22E/C22R S35C 35 1035 C35/C35E/C35R S45C 45 1045 C45/C45E/C45R S50C 50 1049 C50/ C50E/C50R S55C 55 1055 C55/C55E/C55R S58C 60 1060 C60/C60E/C60R G4053 - - EN 10132 Chrome Steels SCr415 15Cr 5115 16MnCr5 SCr420 20Cr 5120 Chrome Molybdenum Steels G4053 EN 10084 SCM415 15CrMo - - SCM430 30CrMo 4130 - SCM435 35CrMo/35CrMoV 4137 34CrMo4/34CrMoS4 - Q/BQB-310 - EN 10149-2 Low Alloy Steels Nickel Chrome Molybdenum Steels QStE380TM QStE420TM QStE460TM S420MC S460MC G4053 - - EN 10084 SNCM220 20CrNiMo 8620 20NiCrMo2-2 13
Chung Hung Steel Corporation 317, Yu Liao Road, Chiao Tou, Kaohsiung, 82544, Taiwan,R.O.C TEL:886-7-611-1099; FAX:886-7-611-0857 China Steel Global Corporation 10F, No.88 Cheng gong 2 nd Road,Qian zhen,kaohsiung, 80661, Taiwan, R.O.C TEL:886-7-332-2168 EXT 33129 or 33265 FAX:886-7-335-6412 Hung Li Steel Corporation 24, Yen Hai 3 rd Road, Hsiao Kang, Kaohsiung, 81264, Taiwan, R.O.C TEL:886-7-871-6886 EXT 8221;8401 FAX:886-7-871-6996 http://www.hlsteel.com.tw/ E-mail: HLP0@hlsteel.com.tw Oct. 2015,10th Edition