DIN 1.2581 H21 Steel-Luoyue Precision Metal

What is H21 steel?
H21 is perhaps the most widely used of the Tungsten hot work steels. The 9.5% tungsten content imparts good resistance to softening at service temperatures while still maintaining adequate toughness. Unlike the higher tungsten grades, H-21 may be cooled by continuous flow of water if the design of the die will permit.

Chemical Composition

The following table shows the chemical composition of H21 tools steels.

Element Content (%)

C 0.26-036

Mn 0.15-0.40

Si 0.15-0.50

Cr 3.00-3.75

Ni 0.3

W 8.50-10.00

V 0.30-0.60

Cu 0.25

P 0.03

S 0.03

Physical Properties

The physical properties of H21 tool steels are outlined in the following table.

Properties Metric Imperial

Density 8.19 g/cm3 0.296 lb/in3

Melting point 1432°C 2610°F

Mechanical Properties

The mechanical properties of H21steels are tabulated below.

Properties Metric Imperial

Hardness, Rockwell C 40.0 - 55.0 40.0 - 55.0

Bulk modulus 140 GPa 20300 ksi

Shear modulus 80.0 GPa 11600 ksi

Poisson's ratio (25°C) 0.27-0.30 0.27-0.30

Elastic modulus 190-210 GPa 27557-30458 ksi

Thermal Properties

The below table shows the thermal properties of H21 tool steels.

Properties Metric Imperial

CTE, linear 12.4 μm/m°C 6.89 μin/in°F

Thermal conductivity 27.0 W/mK 187 BTU-in/hr-ft2°F

Element	Content (%)
C	0.26-036
Mn	0.15-0.40
Si	0.15-0.50
Cr	3.00-3.75
Ni	0.3
W	8.50-10.00
V	0.30-0.60
Cu	0.25
P	0.03
S	0.03

Properties	Metric	Imperial
Density	8.19 g/cm3	0.296 lb/in3
Melting point	1432°C	2610°F

Properties	Metric	Imperial
Hardness, Rockwell C	40.0 - 55.0	40.0 - 55.0
Bulk modulus	140 GPa	20300 ksi
Shear modulus	80.0 GPa	11600 ksi
Poisson's ratio (25°C)	0.27-0.30	0.27-0.30
Elastic modulus	190-210 GPa	27557-30458 ksi

Properties	Metric	Imperial
CTE, linear	12.4 μm/m°C	6.89 μin/in°F
Thermal conductivity	27.0 W/mK	187 BTU-in/hr-ft2°F

H21 Steel Applications:

H21 hot work tool steel is particularly useful for hot forging and blanking dies and punches for making nuts, bolts and other similar small components. Dies, cores, inserts, pins, etc for the die casting of copper base alloys are also prime applications for this steel. Other uses include forming dies, shear blades, hot extrusion dies, mandrels, punches, die holders, ejector discs and extrusion liners.

Forming Option

1 Hot rolling process

2 Hot Forging: Electro-hydraulic; High-speed-hydraulic; Oil-hydraulic; Precision-forging

Heat-treatment Option

1 +A: Annealed (full/soft/spheroidizing)

2 +N: Normalized

3 +NT: Normalized and tempered

4 +QT: Quenched and tempered (water/oil)

Suface Option

1 Black Surface

2 Grounded: Bright but rough ; Not precision

3 Machining for plate: Bright and precision; Little turning scar

4 Peeled/Turned: Bright and precision; Little turning scar

5 Polished: Very Bright and precision size; Not turning scar

Other Services

1 Cutting: Small pieces

2 CNC Machine: Produce as your drawing

3 Package: Bare/Nylon/Canvas/Wooden

4 Payment:T/T, L/C, O/A(request credit)

5 Transport:FOB/CFR/CIF/DDU/DDP (train/ship/Air)

If you need product information or price, please fill in your contact information in the form, we will usually contact you within 12 hours. You could also email me info@lyapm.com to get prompt reply.

1. Stock view



2. Processing and Technology for heating processing

Cutting processing   Quenching   Tempering Annealing



3. Quality testing

1.      Inspection Institution

Shanghai Fuda Testing Technology Group Co., LTD. Nanjing Branch

Focus on analysis, testing, testing, r & D four service areas. Analysis fields include component analysis, formula analysis, failure analysis, structure analysis, methodology development and validation, raw material quality control/evaluation, consistency evaluation, feature analysis and other directions; The testing field involves physical and chemical properties testing, toxic and harmful substances testing, flame retardant performance testing, reliability testing and other directions; The testing field involves energy spectrum, electron microscope, spectrum, chromatography, mass spectrometry and other directions; The r&d field involves formula development, formula upgrading, formula customisation, cooperative research and development and other directions.

Beijing Zhongke Chemical Technology Research Institute

It is a chemical technology research institution based on scientific research and testing. They adhere to paying equal attention to basic research and applied research, and combining applied research and technology transformation, developing into a comprehensive research institute characterised by "task-oriented disciplines". Approved by the relevant national departments, the company has become a third-party analysis and testing technology service unit, and has obtained CMA qualification certification. It has carried out research and development and design, analysis and testing, test and verification, generic processing, information and intellectual property services, providing public services for innovation of technology-based enterprises. Supported by the government innovation Fund, the institute has been awarded as a national high-tech enterprise.



2.Inspection Machining

   Metal composition testing machine   Computerised Materials Torsion Testing Machine   Metal bar composite rod bending tensile strength testing machine

3. Material test certificate

4. Packaging

  In the steel export activities, we also need to pack the steel to prevent the steel from being scattered in the transportation process. In the hoisting process, it is necessary to lift the steel. So steel is very necessary in the export process. Below is the picture of packaging：



According to the requirements of the state of steel materials, the use of binding, bare, frame, pallet.

Packing standard: according to the following national standard requirements (the parts beyond the requirements will be specified separately)

GB／T191 packaging-pictorial marking for handling of goods

GB／T4857 (all parts) basic test for transport packages

GB／T4879 rustproof packaging

GB／T5048 damp-proof packing

GB／T7350water-proof packing

GB／T8166 Package cushioning design

GB/T4892-1996  Hard straight square transport packaging size series

GB/T13201-91 Cylinder transport package size series

GB/T16471-1996Design and make the size limit of transport package

5. Logistic



By SEA By Air By Express

If you need product information or price, please fill in your contact information in the form below, we will usually contact you within 12 hours. You could also email me info@lyapm.com to get prompt reply.

1. Company profile

Luoyue Precision Metal established in 2018, is a leading Stockists and global distributor for Metal Raw Materials like Steel/Aluminum/ Stainless steel/Copper/ Nickel Rods, Bars, Plates, Sheets,Pipes, fittings, fasteners, Inconel alloys, Wire and Wire-Mesh to customers from aerospace, automotive, electronics, precision manufacturing, ordnance, marine, shipbuilding, oil & gas, power plant and construction.

The company has a high-precision, high-efficiency modern processing site, CNC machine tools and complete testing and inspection technology, and introduces international advanced technologies.

2. Certificates. (Business certificate/ISO9001/Trading certificate/SGS/FormE)

.

3. Our customers

Customer visits

4. Past Inquiry

.

If you need product information or price, please fill in your contact information in the form below, we will usually contact you within 12 hours. You could also email me info@lyapm.com to get prompt reply.

Customer Feedback:

Comments

HOT FAQ:

Q1. Where is your factory ?

A1: Our company’s processing center is located in Shanghai, China.Which is well equipped with kinds of machines, such as laser cutting machine,mirror polishing machine and so on.We can provide a wide range of personalized services according to the customers’ needs.

Q2. What are your company's main products ?

A2: We are professional one-stop meta supplier for Aluminium/ steel/ stainless steel/ copper etc.

Q3. How do you control quality ?

A3: Mill Test Certification is supplied with shipment, Third Party Inspection is available.

Q4. What are the advantages of your company ?

A4: We have many professionals, technical personnel, more competitive prices and best after-dales service than other stainless steel companies.

Q5. How many coutries you already exported ?

A5: Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt,Turkey, Jordan, India, etc. We are based in Shanghai, China, start from 2019,sell to Southeast Asia(50.00%),South America(10.00%),North America(5.00%),Eastern Europe(5.00%),Eastern Asia(5.00%),Northern Europe(5.00%),Domestic Market(15.00%),Mid East(10.00%). There are total about 11-50 people in our office.

Q6. Can you provide sample ?

A6: Small samples in store and can provide the samples for free.

Customized samples will take about 5-7days.

Q7Could we visit your factory?

A7: Sure, we welcome you to visit the factory , check our production lines and know more about our strength and quality.

Q8: Do you have quality control system?

A8: Yes, we have ISO, BV, SGS certifications and our own quality control laboratory.

Q9: Can you arrange the shipment for us?

A9: Yes, we have designated sea freight and railway freight forwarders with decades of experiences and we get the best price with earliest vessel and professional service.

Q10: How long is the delivery time?

A10: Generally it is 7 days if we have the exact goods in our stock. If not, it will take around 15-20 days to get goods ready for delivery.

Q11: Can I get some samples?

A11: We are glad to provide free samples to you, but we do not offer the freight.

Q12: What is your after-sale service?

A12: We provide after-sale service and offer 100% guarantee on our products.

Q13: What is your MOQ?

A13: Depend on the request material, sometimes for customized one have MOQ.

Q14: why should you buy from us not from other suppliers?

Luoyue precision metals (Shanghai) Co., Ltd. is located in Shanghai, China. It is one of the most professional metal material suppliers in China, providing nearly 100 kinds of metal materials, from raw materials to CNC processing

Q15: what services can we provide?

Accepted Delivery Terms: FOB, CFR, CIF, EXW, CIP, DDP, Express Delivery

Accepted Payment Currency:USD,EUR,JPY,CAD,GBP,CNY;

Accepted Payment Type: T/T,L/C,D/P D/A

Language Spoken:English,Chinese,Spanish

Supply Ability

500 Ton/Tons per Month

Packaging & Delivery

Airworthy package. Waterproof cloth, wooden case, craft paper and steel belt packing.

Port: shanghai

Exhibition

Production Workshop

Package & Shipping

Contact us

Chemical Composition

Physical Properties

Mechanical Properties

Thermal Properties

H21 Steel Applications:

Forming Option

Heat-treatment Option

Suface Option

Other Services