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High Speed Steel
BOHLER VIEW CHEMICAL ANALYSIS % HEAT TREATMENT CORRESPONDING SPECIFICATIONS TYPICAL APPLICATIONS
C% Si% Mn% Cr% Mo% Ni% W% V% Co% Hardening Temperature Quenching Medium Tempering Temperature Brinell Rockwell Hardness JAPAN JIS AISI POLDI THREAD
S 600 0.80 TO 0.90  ≤0.40  ≤0.40 3.80 TO 4.50 4.50 TO 5.50 - 5.50 TO 6.70 1.60 TO 2.20 - 1190 - 1230 OIL / AIR 540-570 64-66 SKH 9 SKH 51 M-2 MAXIMUM SPECIAL MO5 Thread Cutting Tool, Twist Drills, Reamers, Broaching Tools, Metal Saws, Various Milling Tools, Wood Working Tools, Cold Work Tools.
S 705 0.80 TO 0.90  ≤0.40  ≤0.40 3.80 TO 4.50 4.80 TO 6.20 - 5.50 TO 6.70 1.70 TO 2.30 4.50 TO 5.50 1190-1230 OIL/AIR 550-580 64-66 SKH 55 M-35 MAXIMUM SPECIAL 76 MO Various Tuning & Planning Tools, Milling Cutters, Taps, Twist Drills, Wood Working Tools, Cold Work Tools.
S 500

1.00 TO 1.15

 ≤0.50  ≤0.40 3.50 TO 4.50 9.00 TO 10.00 - 1.20 TO 1.90 0.90 TO 1.40 7.50 TO 8.50 1170-1210 OIL/AIR 530-560 67-69 SKH 59 M-42 - Milling Cutters, Twist Drills, Thread Cutting Tools,Broaching Tools, Cold Work Tools.
S 700 1.15 TO 1.30  ≤0.40  ≤0.40 3.80 TO 4.50 3.00 TO 4.00 - 9.00 TO 11.00 3.00 TO 3.70 9.00 TO 11.00 1200-1240 OIL/AIR 540-570 65-67 SKH 57 T-42 - Turning & Milling Tools for Roughing & Finishing Work,Wood Working Tools,Heavy Duty Cold Work Tools, Tool Bits.
S 200 0.70 TO 0.85  ≤0.40  ≤0.40 3.80 TO 4.50 - - 17.00 TO 19.00 0.80 TO 1.20 - 1250-1290 OIL/AIR 550-580 64-66 SKH 2 T-1 MAXIMUM SPECIAL Turning Planning & Slotting Tools, Taps, Twist Drills, Threading Dies, Profile Cutting Tools, Broaching Tools, Reamers.
S 305 0.70 to 0.85  ≤0.40  ≤0.40 3.80 TO 4.50 - - 17.00 TO 19.00 0.80 TO 1.20 4.50 TO 11.00 1240-1280 OIL/AIR 550-580 64-66 SKH 3 T-4 MAXIMUM SPECIAL 55 Turning,Planning & Milling Tools in Particular for Roughing Work.
S 300 0.70 TO 0.85  ≤0.40  ≤0.40 3.80 TO 4.50 - - 17.00 TO 19.00 - 9.00 TO 11.00 1250-1290 OIL/AIR 560-590 64-66 SKH 4A T-5 MKH Turning, Planning & Milling Tools in Particular for Roughing Work.
S 590 ISOMATRIX 1.27 0.50 0.30 4.2 5.00 - 6.4 3.10 8.40 1075-1180 OIL SALT-BATH 550-580 64-66 - ASP-30 - Snaper cutters hobs milling cuttes broaching tools taps twist drills
S 790 ISOMATRIX 1.30 - - 4.2 5.00 - 6.40 3.00 - 1050-1180 OIL SALT-BATH 540-570 64-66 - ASP-23 - Powder HSS, Excellent wear resistence & toughness.
 
 
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