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Countersunk WasherTool steel
Tool steel D2
Tool Steel D2 is a versatile high-carbon, high-chromium, air-hardening tool steel that is characterized by a relatively high attainable hardness and numerous, large, chromium-rich alloy carbides in the microstructure. These carbides provide good resistance to wear from sliding contact with other metals and abrasive materials. Although other steels with improved toughness or improved wear resistance are available, D2 provides an effective combination of wear resistance and toughness, tool performance, price, and a wide variety of product forms.
Material advantages
D2 steel is perfectly suited for long lasting tools and die applications. It provides excellent abrasion resistance qualities, very high hardness and mild corrosion resistance in the hardened state and good machinability in the annealed state.
Recommended description
D2 provides an effective combination of wear resistance and toughness, tool performance, price, and a wide variety of product forms.
Properties
| Name | |
|---|---|
| Tensile strength | 2500MPa |
| Yield strength | 2290MPa |
| Density | 7.695g/cc |
| Hardness | 250HB |
| Elongation at Break | 15.2% |
| Modulus of elasticity | 215GPa |
| Maximum service temperature | 195 – 245 °C |
| Thermal expansion coefficent | 10.3 – 12 10^-6 ºC |
| Thermal conductivity | 29.3 – 31.7 W/(m⋅°C) |
Common applications
• Rolls
• Punches
• Dies for blanking, forming, trimming
• Thread rolling
• Shear knives
• Food-processing knives
• Gauges
Tool steel A2
Material type: Metal, High hardness, High strength, Magnetic
Tool Steel A2 is a versatile, air-hardening tool steel that is characterized by good toughness and excellent dimensional stability in heat treatment. A2 is intermediate in wear resistance between O1 oil-hardening tool steel and D2 high-carbon, high-chromium tool steel. A2 provides an effective combination of strength and toughness, tool performance, price, and a wide variety of product forms.
Material advantages
A2 has high toughness and dimensional accuracy in hardened state. When it comes to wear and abrasion resistance is not as good as D2, but has better machinability.
Recommended description
A2 provides an effective combination of strength and toughness, tool performance, price, and a wide variety of product forms.
Properties
| Name | |
|---|---|
| Tensile strength | 2360MPa |
| Yield strength | 2140MPa |
| Density | 7.861g/cc |
| Hardness | 250HB |
| Elongation at Break | 6.1% |
| Modulus of elasticity | 219GPa |
| Maximum service temperature | 195 – 245 °C |
| Thermal expansion coefficent | 10.5 – 11 10^-6 ºC |
| Thermal conductivity | 36.1 – 39 W/(m⋅°C) |
Common applications
• Punches
• Dies
• Chuck jaws
• Cutting tools for woodworking
• Tooling for plastic injection
• Dowel pins
• Hammers
• Industrial knives
• Gage
Tool steel O1
Material type: Metal, High hardness, High strength, Magnetic
Tool Steel O1 is the original oil-hardening, “non-shrinking” tool steel that can be hardened to the Rockwell C 65 range from a low austenitizing temperature. O1 is a general-purpose tool steel that is typically used in applications where alloy steels cannot provide sufficient hardness, strength, and wear resistance.
Material advantages
When heat treated, O1 has good hardening results and small dimensional changes. It is a general purpose steel that is used in applications where alloy steel cannot provide sufficient hardness, strength and wear resistance.
Recommended description
O1 is a general-purpose tool steel that is typically used in applications where alloy steels cannot provide sufficient hardness, strength, and wear resistance.
Properties
| Name | |
|---|---|
| Tensile strength | 2360MPa |
| Yield strength | 2140MPa |
| Density | 7.833g/cc |
| Hardness | 255HB |
| Elongation at Break | 6.1% |
| Modulus of elasticity | 219GPa |
| Maximum service temperature | 165 – 215 °C |
| Thermal expansion coefficent | 11.3 – 11.8 10^-6 ºC |
| Thermal conductivity | 41.2 – 44.6 W/(m⋅°C) |
Common applications
• Punches
• Dies
• Chuck jaws
• Cutting tools for woodworking
• Tooling for plastic injection
• Dowel pins
• Hammers
• Industrial knives
• Gage
Tool steel A3
Material type: Metal, Magnetic
Tool Steel A3 is a high quality Cold work tool steel, It belong to the high quality high carbon alloy tool steel. Oil Quenched & Tempered Hardenss is 28-34 HRc. AISI A3 steel Annealing delivery hardenss less than 250HB.A3 steel equivalent with ASTM A681, FED QQ-T-570, UNS T30103.
Material advantages
It is high quality cold work steel that can be oil quanched and tempered.
Material shortcomings
Poor weldability and poor corrosion resistance.
Properties
| Name | |
|---|---|
| Tensile strength | 2380MPa |
| Yield strength | 2100MPa |
| Density | 7.86g/cc |
| Hardness | 255HB |
| Elongation at Break | 1% |
| Modulus of elasticity | 203GPa |
| Thermal expansion coefficent | 11.8 – 14.3 10^-6 ºC |
| Thermal conductivity | 37 W/(m⋅°C) |
Common applications
• Punches
• Dies
• Chuck jaws
• Cutting tools for woodworking
• Tooling for plastic injection
• Dowel pins
• Hammers
• Industrial knives
• Gage
Tool steel S7
Material type: Metal, Magnetic
Tool steel S7 is a shock-resistant air hardening steel and has exceptional impact properties plus the highest hardenability of shock resisting grades of tool steel. Steel S7 also possesses good softening resistance at high temperatures which gives it hot work capabilities. Since S7 steel hardens in air, it is also safe and stable in heat treatment.
Material advantages
It is characterized with excellent toughness, high strength and medium wear resistance. It is a great candidate for tooling applications and can be used for both cold and hot working applications.
Material shortcomings
S7 steel hardens in air, and it is also safe and stable in heat treatment.
Properties
| Name | |
|---|---|
| Tensile strength | 2200MPa |
| Yield strength | 2050MPa |
| Density | 7.833g/cc |
| Hardness | 30-60HRC |
| Elongation at Break | 7.5% |
| Modulus of elasticity | 215GPa |
| Maximum service temperature | 165 – 215 °C |
| Thermal expansion coefficent | 10.7 – 11.2 10^-6 ºC |
| Thermal conductivity | 42.3 – 45.7 W/(m⋅°C) |
Common applications
• Punches
• Dies
• Chuck jaws
• Cutting tools for woodworking
• Tooling for plastic injection
• Dowel pins
• Hammers
• Industrial knives
• Gage
