| Customization: | Available |
|---|---|
| After-sales Service: | Online |
| Warranty: | One Year |
|
Still deciding? Get samples of $ !
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
SK5 is a carbon tool steel with JIS G4401 standard. After quenching and tempering, it has high hardness and wear resistance After quenching and tempering, it has high hardness and wear resistance, but low thermal hardness, poor hardenability, easy deformation, low plasticity and strength. Used as various tools that require high hardness and wear resistance, such as simple shaped molds and punches, metal cutting tools, drilling tools, woodworking milling cutters, countersunk drills, axes, chisels, longitudinal hand saws, as well as secondary tools such as fitter assembly tools and rivet dies.
Advantages:
High hardness (reaching HRC 60 or above after quenching) and wear resistance, suitable for cutting tools.
The chemical composition contains elements such as chromium (0.3%) and nickel (0.25%), which enhance edge retention and impact resistance.
Disadvantages:
Low thermal hardness: The hardness rapidly decreases at high temperatures, making it unsuitable for high-speed cutting or high-temperature environments.
Poor hardenability: only suitable for tools with simple shapes (such as punches, chisels), complex molds are prone to deformation.
Weak corrosion resistance: rust prevention treatment is required, otherwise it is prone to oxidation.
3. Application scenarios
Mainly used for tools with high wear resistance requirements but low stress:
Cutting tools: woodworking milling cutters, hand saws, drill bits.
Mold parts: punching dies, rivet punching dies, etc.
Secondary tools: fitter assembly tools, axes, chisels, etc.
4. Similar steel comparison
SK5 has a chemical composition similar to W2 steel and 1084 steel (high carbon, low alloy), both of which are known for their sharpness retention and toughness, but have weaker corrosion resistance.
5. Supplementary explanation
Some sources refer to SK5 as "spring steel", but in reality it is more inclined towards tool steel, and spring steel requires a higher elastic limit.In terms of timeliness, sources after 2024 (such as Xiaohongshu) are consistent with early encyclopedia content, but it should be noted that non authoritative platforms may have wording errors.
| Composition | C | Si | Mn | P | S | Cr | Ni | Cu | |
| Standard | Min. | 0.8 | 0.1 | 0.1 | - | - | - | - | - |
| Max | 0.9 | 0.35 | 0.5 | 0.03 | 0.03 | 0.3 | 0.25 | 0.25 |
| CHINA | JAPAN | AMERICA | ISO | EN | RUSSIA | |||
| GB | ISC | JIS | ASTM | UNS | ISO | EN | DIGITAL | GOST |
| T8Mn | T01080 | SK85 SK85 |
W1-C8 | T72301 | C90U (TC90) |
C90U | 1.1830 | У8Г |
| Product | Size | Hardness | Further processing | Application |
| Annealed | T:0.08-4.0MM W:2-400MM |
120-180HV | Severe Bending Shaping Heat Treatment |
springs, washers, Spacers,clips,pin, inserts,shoe,shank, toe,cap, auto components, auto clutches. |
| Cold Rolled | T:0.5-4.0MM W:2-400MM | 20-30HRC | Heat Treatment | bandsaw blades scraper |
| Hardened & Tempered | T:0.08-4.0MM W:2-400MM |
40-65HRC | change size per unit as request | rolling shutter spring, blades, putty knives, shoe insole, knives,flat spring |
| Bimetallica composite |
T:0.08-4.0MM W:2-400MM |
Mix HT HRC |
change size per unit as request |
metal cutting band saw blades |
Q1: Why choose us?
A: Our company, as an internationally experienced and professionalsupplier, has been engaged in steel business for more than ten years. Wecan provide a variety of steel products with high quality to our clients.
Q2: Can you provide OEM/ODM service?
A: Yes. Please feel free to contact us for more details
Q3:What is your terms of payment?
A: 100% T/T advance.
30% T/T and balance against copy of documents.
30% T/T advance, balance L/C at sight.
Q4: Can we visit your factory?
A: Warmly welcome. Once we have your schedule, we will arrange theprofessional sales team to follow up your case.
Q5: Can you provide sample?
A: Yes. Sample is free for regular sizes, but the buyer needs to pay freightcost.
Q6: How long is your delivery time?
A: Regular lead time is 15 to 30 days after receiving deposit.
){kind=link}