Общий каталог Yamawa 2021 - страница 686

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14. Materials used for Cutting Tools Intro Chemical composition of the materials specified in JIS Chemical composition SP Classification Symbol C Si Mn P S Cr Mo W V Co SKH 2 0.73-0.83 ≤0.45 ≤0.4 ≤0.030 ≤0.030 3.80-4.50 - 17.20-18.70 1.00-1.20 - W Type HSS SKH 3 0.73-0.83 ≤0.45 ≤0.4 ≤0.030 ≤0.030 3.80-4.50 - 17.00-19.00 0.80-1.20 4.50- 5.50 SL SKH 4 0.73-0.83 ≤0.45 ≤o.4 ≤0.030 ≤0.030 3.80-4.50 - 17.00-19.00 1.00-1.50 9.00-11.00 SKH10 1.45-1.60 ≤0.45 ≤0.4 ≤0.030 ≤0.030 3.80-4.50 - 11.50-13.50 4.20-5.20 4.20- 5.20 SKH51 0.80-0.88 ≤0.45 ≤0.4 ≤0.030 ≤0.030 3.80-4.50 4.70- 5.20 5.90- 6.70 1.70-2.10 - SKH52 1.00-1.10 ≤0.45 ≤0.4 ≤0.030 ≤0.030 3.80-4.50 5.50- 6.50 5.90- 6.70 2.30-2.80 - SKH53 1.15-1.25 ≤0.45 ≤o.4 ≤0.030 ≤0.030 3.80-4.50 4.70- 5.20 5.90- 6.70 2.70-3.20 - PO SKH54 1.25-1.40 ≤0.45 ≤0.4 ≤0.030 ≤0.030 3.80-4.50 4.20- 5.00 5.20- 6.00 3.70-4.20 - Mo Type HSS SKH55 0.87-0.95 ≤0.45 ≤0.4 ≤0.030 ≤0.030 3.80-4.50 4.70- 5.20 5.90- 6.70 1.70-2.10 4.50- 5.00 SKH56 0.85-0.95 ≤0.45 ≤0.4 ≤0.030 ≤0.030 3.80-4.50 4.70- 5.20 5.90- 6.70 1.70-2.10 7.00- 9.00 SKH57 1.20-1.35 ≤0.45 ≤0.4 ≤0.030 ≤0.030 3.80-4.50 3.20- 3.90 9.00-10.00 3.00-3.50 9.50-10.50 ST SKH58 0.95-1.05 ≤0.7 ≤0.4 ≤0.030 ≤0.030 3.50-4.50 8.20- 9.20 1.50- 2.10 1.70-2.20 - SKH59 1.05-1.15 ≤0.7 ≤0.4 ≤0.030 ≤0.030 3.50-4.50 9.00-10.00 1.20- 1.90 0.90-1.30 7.50- 8.50 ROLL Cross chart Classification Symbol Usage CARBIDE AISI VDEH ISO SKH 2 Tools for general cutting and other kinds of tools T1 S18-0-1 S1 (HS18-0-1) SKH 3 Tools for high speed heavy cutting and other kinds of tools T4 S18-1-2-5 S7 (HS18-1-1-5) W Type HSS SKH 4 Tools for cutting hard -to-machine materials and other kinds of tools T5 S18-1-2-10 S6 (HS18-0-1-10) LONG SKH10 Tools for cutting ultra hard-to-machine materials and other kinds of tools T 15 - S9 (HS12-1-5-5) General cutting tools from which toughness is particularly SKH51 M2 S6-5-2 S4 (HS6-5-2) required, and other kinds of tools SKH52 Tools for cutting high hardness material from which M 3-1 - - HAND SKH53 comparatively high toughness is required and other kinds of tools M 3-2 S6-5-3 S5 (HS6-5-3) TAPS SKH54 Tools for cutting ultra hard-to-machine materials and other kinds of tools M4 - - SKH55 High speed cutting tools from which comparatively high M 35 S6-5-2-5 S8 (HS6-5-2-5) Mo Type HSS SKH56 toughness is required and other kinds of tools M 36 - - SKH57 Tools for cutting ultra hard-to-machine materials and other kinds of tools - S10-4-3-10 S10 (HS10-4-3-10) EG (STI) General cutting tools from which toughness is particularly SKH58 M7 S2-9-2 S2 (HS2-9-2) required, and other kinds of tools SKH59 High speed heavy cutting tools from which comparatively M 42 S2-10-1-8 S11 (HS2-9-1-8) SPECIAL high toughness is required, and other kinds of tools THREADS, GAUGES The standard of HSS material is specified in JIS. But there are many HSS materials which standard is not specified in JIS. Recently even the kind THREAD of HSS-P is getting wider and various. Besides, SKH10, SKH53, SKH57 and their equivalents, such Hi vanadium/hi cobalt material as contains 4-12% vanadium and 8-11% cobalt is now being manufactured. Material engineering will be developed rapidly in the future. Under such MILLS situation, there can be many cases where JIS symbols are not used, and the use of larger classification and their symbols is getting popular. DIES CENTER DRILLS Technical info 687