JIS HMD-5 Cold Worked Tool Steel
Superior Abrasion Resistance
HMD-5’s chromium carbides deliver 30% higher wear resistance than conventional steels like O1, making it ideal for shear blades and blanking dies subjected to heavy abrasive loads.
Precision Machinability
The steel’s pre-hardened state (28-32 HRC) allows easy grinding and polishing, achieving mirror-like surfaces for high-gloss molds. Minimal distortion during heat treatment ensures dimensional accuracy for complex geometries.
Versatile Industrial Adaptability
From automotive stamping tools to aerospace components, HMD-5 adapts to diverse applications. Its thermal stability (up to 500°C) and cost-effective processing enhance performance in both cold work and moderate high-temperature environments.
- HONGXIN
- 中国
- 30DAYS
- 8000TONS/MONTH
- Information
JIS HMD-5 Tool Steel Overview
1. JIS HMD-5 Steel Introduction
JIS HMD-5 is a high-performance cold work tool steel developed by Hitachi Metals under the Japanese JIS standard. With a composition of 0.70-0.80% carbon and 1.00-1.10% chromium, it combines exceptional hardness (58-63 HRC post-quenching) and wear resistance. Its pre-hardened state (28-32 HRC) simplifies machining, while thermal stability up to 500°C ensures reliability in demanding environments. Widely used in automotive, aerospace, and electronics industries, HMD-5 is ideal for precision tools like blanking dies, shear blades, and injection mold inserts, offering extended tool lifespan and cost-efficiency.
| Heat treatment | Normalized ; Annealed ; Quenched ; Tempered | |
| Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | |
| Delivery condition | Forged; Hot rolled; Cold drawn | |
| Test | Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. | |
| Payment terms | T/T;L/C;/Money gram/ Paypal | |
| Trade terms | FOB; CIF; C&F; etc.. | |
| Packing | Standard Packages, or as Customers Request | |
| Delivery time | 30-45 days | |
2. JIS HMD-5 Tool Steel Supply Range
| Size | Round | Dia 12-500mm |
| Plate/Flat/Block | Thickness 8mm-300mm | |
| Width 210mm-710mm | ||
| Process | EAF+LF+VD+Forged+Heat treatment(optional) |
3. JIS HMD-5 Tool Steel Chemical Composition & Global Equivalents
| Grade | C | Mn | P | S | Si | Cr | V | Mo | |||||
| HMD5 | 0.75 | 0.95 | 0.70 | 1.00 | 0.03 | 0.03 | 0.90 | 1.10 | 1.00 | 1.20 | 0.05 | 1.10 | 0.15~0.30 |
| 7CrSiMnMoV | 0.75 | 0.95 | 0.70 | 1.00 | 0.03 | 0.03 | 0.90 | 1.10 | 1.00 | 1.20 | 0.05 | 1.10 | 0.15~0.30 |
| Country | China | Japan | Germany | USA | UK |
| Standard | GB/T 1299 | JIS G4404 | DIN EN ISO4957 | ASTM A681 | BS 4659 |
| Grade | 7CrSiMnMoV | HMD5 | / | / | / |
4. JIS HMD-5 Tool Steel Physical & Mechanical Properties
Physical Properties
| Property | Metric Units |
|---|---|
| Density | 7.8 g/cm³ |
| Thermal Expansion (20-100°C) | 11.8×10⁻⁶/°C |
| Thermal Conductivity | 25-28 W/(m·K) |
Mechanical Properties
| Property | Metric Units |
|---|---|
| Hardness (Pre-hardened) | 28-32 HRC |
| Hardness (Quenched & Tempered) | 58-63 HRC |
| Tensile Strength | ≥2300 MPa |
| Impact Toughness (Charpy V-notch) | 10-15 J |
1.) Hardness: The hardness of 7CrSiMnMoV typically ranges from 58 to 62 HRC (Rockwell Hardness C scale), making it a very hard and wear-resistant material. 2.)Strength: 7CrSiMnMoV has a high tensile strength, typically ranging from 2000 to 2500 MPa, which makes it suitable for applications that require high strength and toughness.
3.) Toughness: This steel has good toughness and impact resistance, which helps prevent cracking and chipping during cutting or forming operations.
4.) Wear resistance: 7CrSiMnMoV has excellent wear resistance, which allows it to maintain its cutting edge sharpness and dimensional stability even under high-stress conditions. 5.) Corrosion resistance: This steel has good corrosion resistance, but it is not as corrosion-resistant as stainless steels. It is important to properly maintain and store tools made from 7CrSiMnMoV to prevent corrosion. 6.) Machinability: 7CrSiMnMoV is relatively easy to machine and grind, allowing for the production of complex and precise tooling components.
5. JIS HMD-5 Tool Steel Heat Treatment
1. )Annealing: The steel is heated to a temperature of around 800-850°C and then slowly cooled in the furnace to relieve internal stresses and improve machinability. 2. )Preheating: The steel is preheated to a temperature of around 500-600°C before the hardening process to ensure uniform heating and prevent cracking. 3. )Hardening: The steel is heated to a temperature of around 1000-1050°C and then quenched in oil, water, or polymer to achieve the desired hardness and improve wear resistance. 4. )Tempering: The hardened steel is then tempered by reheating it to a temperature of around 200-600°C, depending on the desired hardness and toughness. The tempering process helps to reduce internal stresses and improve the steel's toughness and impact resistance. 5. )Stress relieving: To further reduce internal stresses and improve dimensional stability, the steel can be stress relieved by heating it to a temperature of around 500-600°C and then slowly cooling it in the furnace. It is important to carefully control the heating and cooling rates during the heat treatment process to achieve the desired mechanical properties for 7CrSiMnMoV tool steel. Additionally, proper post-heat treatment processes such as grinding, polishing, and coating may be required to achieve the final desired surface finish and performance of the tool steel.
6. JIS HMD-5 Tool Steel Applications
HMD-5 excels in high-precision and high-wear industrial scenarios:
Cold Work Dies: Blanking dies, forming molds, and precision punches for sheet metal.
Cutting Tools: Shear blades, thread-rolling dies, and woodworking knives.
Automotive & Aerospace: Engine component molds, structural part dies, and high-stress fixtures18.
Why Choose HMD-5?
Longevity: 30% longer lifespan than conventional cold work steels (e.g., O1) in abrasive environments.
Precision: Minimal distortion during heat treatment ensures tight tolerances for complex geometries.
7. Delivery condition
For hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed, rough turned.
For hot forged plate, usually the delivery condition is hot forged, annealed, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.
Hongxin Mold Tech Co.,Ltd. owns 1 set of Hot Rolling Production Line at size range flats 8-80*210-710mm, rounds 16-50mm Dia.
12 sets of Hydraulic Forging Hammers from Power 560kgs to 6000kgs which could cover flats 40-300*210-710mm.
8 sets of EF+LF+VD
5 sets of ESR
9 sets of Milling Machines
10 sets of Turning Lathes
6 sets of Precision Milling Machines.
Certification: GB/T 19001-2016/ISO9001:2015
Products' List
Q1:Are you trading company or manufacturer ?
We are the largest tool steel manufacturer in Daye & Huangshi. We can provide a wide range of steel products.
Q2:What is alloy steel round bar export packing?
Usually bundling for large diameter,small diameter bars in bulk or as customer's demand.
Q3.What is your MOQ?
We accept small order,if it is stock,any quantities can be accepted.
Q4.What is your lead time?
Depends actual order,around 20-35 days,or negotiation.
Q5.Can you supply sample?
Yes,we can.Sample fee according to your size.
Q6:What certificates do you have?
ISO, ABS, BV, CCS, Dnv, Lr, Gl, Mill Certificate
Q7: How can I get your quotation as soon as possible?
The email and fax will be checked within 24 hours,meanwhile,the Skype,Wechat and WhatsApp will be online in 24 hours.Please send us your requirement,we will work out a best price soon.
