YXM27C 2 YXM60 YHX2 3 HAP50

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1 HIGH SPEED TOOL STEELS

2 YXM27C 2 YXM60 YHX2 3 HAP50

3 Chemical compositions and Features of YSS High Speed Tool Steels YXM27C 2 YXM60 YHX2 3 HAP50

4 YCS3 SLD SGT SLD-MAGIC ACD37 HMD5 ARK1 3 HPM-MAGIC YXM27C 2 YXM60 YHX2 3 HAP50

5 Characteristics of YSS High Speed Tool Steels YXM27C 3 SKD11 SKD61 3 YSM ARK1 YXM27C Tool life (s) 1,800 1,500 1, Grade 2 YXM60 YHX2 HAP50 Cutting condition Work Machine Automatic lathe Tool tip shape Cutting speed Depth of cut Feed Dry cutting HAP50 SKH51 SKH57

6 Cutting tools Application For general use Recommended Grade For hard material cutting For high speed heavy duty cutting Tool bit Drill Tap Reamer Milling cutter End mill Broach Hob Pinion cutter Shaving cutter Rack cutter Chaser Metal saw Hack saw Metal band saw Wood cutter A values of parenthesis shows a standard Rockwell C hardness.

7 Recommended grade by application of YSS High Speed Tool Steels Cold working tools Application Required hardness range For general use Recommended Grade For abrasion resistance For impact resistance Die for cold press Blanking die Blanking die Sheet use Heavy plate, high-tensile steel Bender swaging die Sheet use Heavy plate, high-tensile steel Die for cold forging Cold forging die Male die Female die Cold heading die Male die Female die Thread rolling die Rolls Cold rolling mill roll 80 HS or over Other Triming die Thin material (under 3 mm) Thick material (3 mm or over) Drawing die Cold hobbing die Machine cutlery Shearing blade (Straight blade) Thin material plate (under 3mm) Medium material plate (3mm to 9mm) Heavy material plate (10 mm or over) Rotary shear, slitter

8 Grade Annealing Heat treatment temperature Quenching Tempering Annealed Hardness Quenched and tempered YXM27C 2 YXM60 YHX2 3 HAP50 Remarks (1) Tools required for high strength at elevated temperature (2) Tools required for higher toughness

9 Standard heat treatment conditions of YSS High Speed Tool Steels 1. All material is delivered as spheroidized annealed condition. 2. When used after reforging, spheroidized annealing is to be done before hardening. 3. Stress relief annealing is to be done in order to remove stress occured by cold working such as cold drawing, cold rolling or cutting and machining. Heating temperature : 650~750 C (to aim higher temperature when softening required) Holding time :1h/25mm thickness Holding time of austenitizing Preheating time 1st stage: 30 minutes for every 25 mm of the tool at C 2nd stage: (Ta x 2) at C 3rd stage: (Ta x 2) at 1,000-1,050 C Preheating is (Ta x 2) at C for small thickness (50 mm max.) and simple shape tools, and wherever facilities are limited. The first stage can be omitted for small tools. Tools of ordinary shape 1st stage preheating 500~600 C 30min/25mm 2nd stage preheating C Holding time Ta x 2 Austenitizing temperature Holding time Ta (refer to Table of below) 450~550 C 30min/25mm Slow cooling (YXR: rapid cooling) About 80 C Tempering (Remarks) As for simple figure tools, 1st stage preheating can be skipped and oil quenching can be applied instead of hot salt bath quenching. For complex figure tools, 3rd stage preheat (1,000-1,050 C) applying is preferable. Heating furnace Time Salt bath Holding time at austenitizing temperature (Ta) Thickness Holding time (s) Multiplication (Holding time/thickness) (Remarks) Holding time in salt bath = dipping time Holding time at tempering temperature (Tt) Thickness Tempering holding time (h) (Remarks) Tempering is needed more than 2 times for grades contain no cobalt and needed more than 3 times for grades cobalt alloyed in order to make it tough enough. The generally recommended tempering temperature will be under 600 C to prevent deterioration of toughness.

10 Conventional High Speed Tool Steels YHX2 P/M High Speed Tool Steels

11 Quenched and tempered hardness curves of YSS High Speed Tool Steels YXM27C 2 YXM60 3 HAP50

12 YSS, ACD, ARK1, CRD, DAC, HAP, HMD, HPM-MAGIC,, SGT, SLD, SLD-i, SLD-MAGIC, XVC, YCS, YHX, YSM, YXM and YXR are registered trademarks of Hitachi Metals, Ltd Tel Tel Tel Tel Tel Tel Tel The characteristics listed on this catalog are representative values and they do not guarantee the quality of the product. This catalog and its contents are subject to change without notice. Do not duplicate this catalog without a permission from Hitachi Metals, Ltd. For further information, please contact the representative in your area. Head Office Shinagawa Season Terrace, , Konan, Minato-ku, Tokyo , Japan Specialty Steel Company, Tool Steel Business Unit. Tel Head Office Other Office Diehl Tool Steel, Inc. Head Office Head Office Bangkok Branch Ayutthaya Factory 2 Manhattanville Road, Suite 301, Purchase, NY 10577, U.S.A. Chicago, Detroit, Pittsburgh, San Jose Head Office 800 East Ross Avenue P.O. Box Cincinnati, OH 45217, U.S.A. Other Office Immermannstrasse 14-16, Dusseldorf, Germany London, Milano, Paris, Leonberg, Munich 1/60, Moo 5, Rojana Industrial Park, Tambol Khanharm, Amphur Uthai, Ayutthaya 13210, Thailand Unit 13A1, 13th Floor, Ploenchit Tower, 898 Ploenchit Road, Lumpini, Pathumwan, Bangkok 10330, Thailand 484 Moo 4, Uthai Sub District, Uthai District, Phranakornsri Ayutthaya 13120, Thailand Tel Tel Tel Tel Tel Tel Gul Avenue, Singapore Tel Head Office Cha Shan Town, Dong Guan City, , China Tel Shanghai Branch No.69 Shuang Ying Road, Qingpu Industrial Zone, Tel Qingpu District, Shanghai, , China Tianjin Jinnan No.11, Jianshe 4th Branch Road, Balitai Town, Tel /3102 Branch Jinnan District,Tianjin, ,China Dalian Branch 3 # -2, Koushin Mould Industrial Park B-1-1-1F. Tel /1022 T. Z. Dalian, , China Head Office Seoul Branch Busan Branch 333, Gongdan 3-daero, Siheung-si, Gyeonggi-do, 15115, Korea Rm City Air Tower Bldg., 36. Teheran-ro 87-gil, Gangnam-gu, Seoul, 06164, Korea 20, Hwajeonsandan 6-ro 102beon-gil, Gangseo-gu, Busan, 46738, Korea Tel Tel Tel Our address and your contact indicated in this catalog are those as of March If you cannot put a call through, please contact below. Plot No 94 & 95, Sector 8, IMT Manesar, Gurgaon , Haryana, India Tel Hitachi Metals, Ltd. Toll free (in Japan) Tel: HY-B1(J,E)-

熱間加工用工具鋼の化学成分 Chemical compositions of YSS hot work tool steels 鋼種 Grade JIS 類似 JIS equivalent C 化学成分 (%) Chemical composition Si Mn Ni Cr W Mo V その他

熱間加工用工具鋼の化学成分 Chemical compositions of YSS hot work tool steels 鋼種 Grade JIS 類似 JIS equivalent C 化学成分 (%) Chemical composition Si Mn Ni Cr W Mo V その他 Others SKD61 1.0 5.2 1.3 0.9 MAGIC SKD61 改良 SKD61 modified