SK85M (SK5) - UNS T72301 | High Carbon Tool Steel

SK85M (SK5) - UNS T72301 | High Carbon Tool Steel About

Grade	SK85M (SK5)
Reference Standards (for reference only)	JIS SK85M (G3311)/SK85 (G4802) AISI/SAE W1-8 UNS T72301
Shapes	Coil, Sheet
Thickness	0.10 to 2.0mm (Strip, Sheet)
Width	3.0 to 300mm (Strip, Sheet)
Length	Strip or Sheet (Length less than 2,000mm)
Technique	Cold Rolled
Temper	Annealed, Skin passed, As Rolled(Hard), Q&T
Surface Finish	Bright, Dull
Examples of Applications	Springs, Hinges, Bandsaws, Thomson Blades/Pinnacle Blades, Horns, Metal Washers, Spacers
Coil I.D.	300, 400, 500mm
Chemical Composition	Refer to the image
Mechanical Properties	Refer to the image
Density	7.84 g/cm
Specific Heat	490 J/(kg K)
Electrical Resistivity	18 micro-ohm meter
Young's Modulus	208 GPa
Thermal Expansion	11.0 x 10-6/K (0-100oC)
Thermal Conductivity	50.2 W/(m K)
Magnetism	Strong
Minimum Order Quantity	100 Kilograms
Country of Origin	Japan, China, Taiwan
Payment Terms	Telegraphic Transfer (T/T)
Delivery Terms	EXW, FOB, CIF, DAP etc.
Packing	Our Standard Packing for Export
Export Markets	Asia, Middle East, North America, South America, Europe etc.

SK85M (SK5) Description :

SK85 (former JIS grade symbol: SK5) is a High Carbon steel with a Carbon content of about 0.85%.
Carbon tool Steel is the most widely used cold rolled carbonl steel because of its good balance of workability, hardenability, product performance, and price. Among them, SK85 is a grade that has relatively good availability in various dimensions due to its large distribution volume.
Most SK materials are generally heat treated before or after processing.
Our materials are maintained to have optimum surface roughness after heat treatment, which allows us to achieve an ideal product finish after blackeing.

Q: How is SK85M (SK5) tool steel typically processed?

A:SK85M (SK5) is offered in various tempers, such as annealed, skin passed, as rolled (hard), and Q&T (quenched & tempered), allowing manufacturers to select the optimal process based on specific mechanical property requirements for their end products.

Q: What are the common applications of SK85M (SK5) steel?

A:This high-carbon tool steel is commonly used in the manufacture of springs, hinges, bandsaws, Thomson blades, pinnacle blades, metal washers, spacers, and horns, thanks to its excellent hardness and resilience.

Q: When should I choose a bright or dull surface finish for SK85M (SK5)?

A:Select a bright finish for aesthetic appeal and reflectivity, often desired in visible or decorative components. Opt for a dull finish in applications where glare reduction or a non-reflective surface is preferred.

Q: Where can SK85M (SK5) be sourced from?

A:SK85M (SK5) is manufactured and exported by reputable Japanese suppliers, available in various dimensions to fit specific project requirements. Sourcing from established manufacturers ensures material integrity and quality.

Q: What are the benefits of using SK85M (SK5) in tool manufacturing?

A:SK85M (SK5) provides superior hardness, wear resistance, and consistent performance under repeated stress, making it ideal for producing reliable cutting devices, flexible springs, and durable mechanical components.

Q: How does the grade SK85M (SK5) differ from other tool steels?

A:SK85M (SK5) stands out due to its high carbon content, which contributes to increased hardness and better edge retention when compared to lower-carbon tool steels, making it particularly well-suited for applications requiring sharpness and strength.