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

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

Name: SK85M (SK5) - UNS T72301 | High Carbon Tool Steel
Brand: TOKUSHU KINZOKU EXCEL CO., LTD.

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MOQ : 100 Kilograms

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

Temper
Annealed, Skin Passed, As Rolled (Hard), Q&T

Width
3.0 to 300 mm Millimeter (mm)

Chemical Composition
Refer to the image

Grade
SK85M (SK5)

Thickness
0.10 to 2.0 mm Millimeter (mm)

Surface
Bright, Dull

Application
Springs, Hinges, Bandsaws, Thomson Blades/Pinnacle Blades, Horns, Metal Washers, Spacers

Shape
Coil, Sheet

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

Minimum Order Quantity
100 Kilograms

Payment Terms
Telegraphic Transfer (T/T)

Packaging Details
Our Standard Packing for Export

Main Export Market(s)
Asia, North America, South America, Eastern Europe, Western Europe, Middle East

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

Grade	SK85M (SK5)
Reference Standards (for reference only)	JIS SK85M (G3311)/SK85 (G4802) AISI/SAE W1-8 UNS T72301
Shape	Coil, Sheet
Thickness	0.10-2.0(Strip, Sheet) Millimeter (mm)
Width	3.0-300(Strip, Sheet) Millimeter (mm)
Length	Strip or Sheet(Length less than 2,000mm)
Technique	Cold Rolled
Temper	Annealed, Skin passed, As Rolled(Hard), Q&T
Surface	Bright, Dull
Application	Springs, Hinges, Bandsaws, Thomson Blades/Pinnacle Blades, Horns, Metal Washers, Spacers
Coil I.D.	300, 400, 526mm
Chemical Composition	Refer to the image
Mechanical Properties	Refer to the image
Density	7.84 g/cm
Specific Heat	490 J/(kgK)
Electrical Resistivity	18 cm
Young's Modulus	208 GPa
Thermal Expansion	11.010^-6/K0100
Thermal Conductivity	50.2 W/(mK)
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.
Packaging Details	Our Standard Packing for Export
Main Export Market(s)	Asia, Muddle East, North America, South America, Europe etc.

SK85M (SK5) - UNS T72301 Description :

SK85M (formerly JIS grade SK5) is a high-carbon tool steel containing approximately 0.85% carbon. It is one of the most commonly used cold-rolled carbon tool steels due to its excellent balance of workability, hardenability, mechanical performance, and cost effectiveness.

Compared with lower-carbon carbon steels, SK85M offers higher hardness and wear resistance after heat treatment while maintaining good formability and processability. Because of its large distribution volume, it is readily available in a wide range of dimensions and tempers.

Most SK-series steels are heat treated either before or after forming to achieve the required hardness, strength, and wear resistance. SK85M responds well to quenching and tempering, making it suitable for spring components, cutting tools, and precision mechanical parts.

TOKKIN maintains optimum surface roughness characteristics that support superior heat-treatment results and allow excellent final appearance after blackening processes.

Main Features:

Excellent Balance of Performance and Cost
Provides an ideal combination of workability, hardenability, durability, and affordability.
Good Hardenability
Can achieve high hardness and strength through quenching and tempering heat treatment.
Widely Available Material
Large market distribution allows availability in various dimensions and delivery conditions.
Suitable for Heat Treatment
Available in Annealed, Skin Passed, Hard Rolled, and Quenched & Tempered (Q&T) conditions.
Good Wear Resistance
High carbon content provides excellent durability and resistance to wear after hardening.
Optimized Surface Quality
Controlled surface finish supports superior appearance and performance after heat treatment and blackening.

SK85M is commonly used for springs, hinges, bandsaws, Thomson blades, horns, metal washers, spacers, and other industrial components that require a combination of strength, hardness, wear resistance, and economical production.

Versatile High-Carbon Tool Steel

SK85M (SK5) tool steel delivers a balanced combination of hardness and toughness, making it suitable for demanding applications. Its adaptability across multiple tempers and surface finishes allows for use in a range of mechanical and cutting tools.

Precision Manufacturing and Wide Applications

Produced to strict Japanese standards, SK85M (SK5) is available in precise dimensions, supporting customization for engineering and manufacturing needs. Its primary applications span springs, bandsaws, washers, and specialized blades, ensuring durability and consistent performance wherever it is deployed.

FAQ's of SK85M (SK5) - UNS T72301 | High Carbon Tool Steel:

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.

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