T1 Tool Steel High Speed | 1.3355 | HS18-0-1 | SKH2
1.High Speed Steel T1 Tool Steel Mechanical Properties Physical Properties of HSS T-1 Steels Properties Metric Imperial Density 8.67 g/cm3 0.313 lb/in3 Mechanical Properties of T-1 Steel Properties Metric Imperial Hardness, Rockwell C 63.0 – 65.0 63.0 – 65.0 Poisson’s ratio 0.27-0.30 0.27-0.30 Elastic modulus 190-210 GPa 27557-30457 ksi Thermal Properties of T1 Tool Steel Properties Conditions T (°C) Treatment Thermal expansion 9.7 x 10-6/ºC 20-200 more – Th...
1.High Speed Steel T1 Tool Steel Mechanical Properties
- Physical Properties of HSS T-1 Steels
|Density||8.67 g/cm3||0.313 lb/in3|
- Mechanical Properties of T-1 Steel
|Hardness, Rockwell C||63.0 – 65.0||63.0 – 65.0|
|Elastic modulus||190-210 GPa||27557-30457 ksi|
- Thermal Properties of T1 Tool Steel
|Thermal expansion||9.7 x 10-6/ºC||20-200 more||–|
|Thermal conductivity||19.9 x W/m-K||100 more||–|
2.Forging of AISI HSS T1 Tool Steel
- Preheat T1 high speed steel uniformly and slowly to 850-880°C.
- Increase the forging temperature for T-1 tool steel until 1050-1130°C.
- T1 hss tool steel should be cooled very slowly after forging.
3.AISI/ASTM T1 Tool Steel Heat Treatment and Properties
|Forging||1700-2100° F||Slow.||Cool slowly in dry sand or in other insulating media.|
|Annealing||1600-1650° F||Cool slowly at a rate of 35° F per hour to 1000° F.||For best results, insulating media is desirable. Hold at temperature for 2 hours.|
|Stress Relieving||1100-1300° F||Cool slowly||Stress relieve after rough machining|
|Preheating||1500-1550° F||Preheat time in furnace is ¾ Hr. per inch of thickness. Heating up to temperature as slow as possible.|
|Hardening||2325-2375° F (furnace)||Quench in air or warm oil. To minimize quenching strains, quench in salt at 1000° F||For maximum wear resistance, harden at 2375° F. For maximum toughness and high hardness, harden at 2275° F.|
|2275-2350° F (salt bath)|
|Tempering||1022 ° F-1058 ° F||Temper T1 high-speed steel immediately after quenching. Hold for at least two hours||Double tempering is recommended. The usual tempering time is 2+2 hours. Recommended temperature is 1000-1075° F for cutting tools. 1100-1200° F for shock tools|
4.Applications of ASTM/AISI T1 Tool Steel
Generally, high speed steels are used for machining at high speeds. HSS T1 steel materials are widely used for:
- Knurling Tools
- Lathe Tools
- Milling Cutters
- Nut Piercers
- Planer Tools
- Shaving Tools
- Thread Cutting Tools