Tool Steel H21 is one of the Cold Work, Medium Air Hardening type tool steels. It contains chromium, molybdenum, vanadium and manganese to promote deep hardening without quenching. This keeps distortion at a minimum upon hardening.
Carbon | 1.25 - 1.5 |
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Iron | Balance |
Manganese | 1.6 - 2.1 |
Molybdenum | 1.25 - 1.75 |
Nickel | 1.55 - 2.05 |
Phosphorus | 0.03 max |
Silicon | 1 - 1.5 |
Sulphur | 0.03 max |
Principal Design Features | This alloy is one of the Cold Work, Medium Air Hardening type tool steels. It contains chromium, molybdenum, vanadium and manganese to promote deep hardening without quenching. This keeps distortion at a minimum upon hardening. |
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Tool Steel H21 Applications | Typically used for thread rolling dies and other intricate die shapes. |
Tool Steel H21 Machinability | As with all of the tool steel alloys the machinability of H21 is medium, similar to the low alloy steels. It has a machinability rating of about 85% that of the simple alloy water hardening tool steels (W group) which are rated at 100% for reference. |
Tool Steel H21 Forming | Forming is done by means of machining or hot forging. |
Tool Steel H21 Welding | H21 is an alloy steel and thus capable of being welded. Consult the alloy supplier for details. |
Tool Steel H21 Heat Treatment | Preheat slowly to 1200 F then raise the temperature to 1475 F and hold for 45 to 60 minutes. Remove and air cool (the alloy is air hardening as the quench medium). |
Tool Steel H21 Forging | The forging temperature range is rather narrow of A10. Forge at 1875 F down to 1650 F. Do not forge below 1600 F. |
Tool Steel H21 Hot Working | Other than forging it is not usual practice to hot work this alloy. Consult the alloy supplier regarding hot working. |
Tool Steel H21 Cold Working | The alloy may be cold worked in the annealed condition by conventional methods. |
Tool Steel H21 Annealing | Anneal at 1425 F and very slow furnace cool at a rate of 25 F per hour or less. |
Tool Steel H21 Aging | Not applicable to this alloy. |
Tool Steel H21 Tempering | Temper at 400 F to 800 F. This will result in developing a hardness of approximately Rockwell C 62 for the low temperature to Rockwell C 55 for the 800 F temper. |
Tool Steel H21 Hardening | This alloy hardens by heat treatment. See "Heat Treatment" and "Tempering". |
Other Comments | H21 alloy has high wear resistance and medium toughness. |
Density (lb / cu. in.) | 0.284 |
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Specific Gravity | 7.85 |
Melting Point (Deg F) | 2590 |
Modulus of Elasticity Tension | 28 |
Tool Steel H21 Sheets & Plates | Tool Steel H21 Olets |
Tool Steel H21 Globe valves | Tool Steel H21 Strips & Coils |
Tool Steel H21 Nippolets | Tool Steel H21 Check valves |
Tool Steel H21 Round bars | Tool Steel H21 Sockolet |
Tool Steel H21 Ball valves | Tool Steel H21 Hexagonal Bars |
Tool Steel H21 Threadolet | Tool Steel H21 forged valves |
Tool Steel H21 Flat bars | Tool Steel H21 Union fittings |
Tool Steel H21 Butterfly valves | Tool Steel H21 forged bars |
Tool Steel H21 Socket weld fittings | Tool Steel H21 needle valves |
Tool Steel H21 Seamless Pipes | Tool Steel H21 Forged Threaded fittings |
Tool Steel H21 Plug valves | Tool Steel H21 Welded pipes |
Tool Steel H21 Plugs and Bushings | Tool Steel H21 Bleed valves |
Tool Steel H21 Seamless Tubes | Tool Steel H21 Weld neck flanges |
Tool Steel H21 custom valves | Tool Steel H21 Welded tubes |
Tool Steel H21 slip on flanges | Tool Steel H21 Wires |
Tool Steel H21 Large diameter pipe & Tube | Tool Steel H21 Blind flanges |
Tool Steel H21 Reducer | Tool Steel H21 flanges |
Tool Steel H21 Lap joint flanges | Tool Steel H21 Cap |
Tool Steel H21 Valves | Tool Steel H21 Threaded flanges |
Tool Steel H21 Concentric reducer | Tool Steel H21 forged fittings |
Tool Steel H21 large diameter flanges | Tool Steel H21 Eccentric reducer |
Tool Steel H21 Buttweld fittings | Tool Steel H21 custom flanges |
Tool Steel H21 stubend | Tool Steel H21 Forged components |
Tool Steel H21 forged flanges | Tool Steel H21 blank flanges |
Tool Steel H21 CNC components | Tool Steel H21 buttweld flanges |
Tool Steel H21 spectacle flanges | Tool Steel H21 elbow & tee |
Tool Steel H21 plate flanges | Tool Steel H21 welded flanges |
Tool Steel H21 gate valves | Tool Steel H21 bends | Tool Steel H21 Nipples |
METALMINISTRY INC. supply Tool Steel H21 strips, sheets, plates, round and square bars, seamless and welded pipes & tubes, Forged & buttweld Fittings, flanges, fastener, flat rolled bars, Wire & valves in Agartala ,Agra, Agra Rampur, Ahmedabad, Aizawl, Ajmer, Aligarh, Allahabad, Alwar, Amaravati, Ambala, Ambattur, Ambernath, Amravati, Amritsar, Aurangabad, Bangalore, Bareilly, Belgaum, Bhagalpur, Bhavnagar, Bhilai, Bhiwandi, Bhopal, Bhubaneswar, Bidhannagar, Biharsharif,Bikaner, Bilaspur, Bokaro, Chandigarh, Chennai, Chittoor, Coimbatore, Cuttack, Dahod, Davanegere, Dehradun, Delhi, Dhanbad, Dharamsala, Dindigul, Diu, Durgapur, Erode, Faridabad, Fatehpur, Gandhidham, Gandhinagar, Ghaziabad, Greater Hyderabad, Greater Mumbai, Greater Warangal, Gurgaon, Guwahati, Gwalior, Haldia, Howrah , Hubballi-Dharwad, Hyderabad, Imphal, Indore, Jabalpur, Jaipur, Jalandhar, Jammu, Jamnagar, Jamshedpur, Jhansi, Jodhpur, Junagadh, Kakinada, Kalyan-Dombivali,Kanpur, Karnal , Kavaratti, Kochi, Kohima, Kolhapur, Kolkata, Kota, Lucknow, Ludhiana, Madurai, Mehsana, Mangalore, Mangaluru, Mira-Bhayandar , Moradabad, Morbi, Mumbai, Muzaffarpur, Mysore, Nagpur, Namchi, Nasik, Navi Mumbai, NDMC, Nellore,New Delhi, New Town Kolkata, Noida, Oulgaret, Pali, Panaji, Panipat, Panvel, Pasighat, Patiala, Patna, Pimpri-Chinchwad, Port Blair, Puducherry, Pune, Raipur, Rajkot, Ranchi, Raurkela Industrial Township, Rourkela, Sagar, Salem, Satna, Secunderabad, Shaharanpur, Shillong, Siliguri, Silvassa, Solapur, Srinagar, Surat, Thane, Thanjavur, Thiruvananthapuram, Thoothukudi, Thrissur, Tiruchirapalli, Tirunelveli, Tirupur, Tumkur, Udaipur, Ujjain, Ulhasnagar, Vadodara, Vapi, Varanasi, Vasai-Virar, Vellore , Vishakhapatnam.
METALMINISTRY INC. Exports Tool Steel H21 Strips & Coils to United States of America, Russia, United Kingdom, Kuwait, Qatar, Oman, UAE, Nigeria, Ethiosia, Egypt, Tanzania, Uganda, Algeria, Sudan, Morocco, Angola, Mozambique, Ghana, Cameroon, Cote D`lvoire, Niger, Burkina Faso, Mali, Malawi, Zambia, Senegal, Chad, Somalia, Zimbabwe, Guinea, Rwanda, Benin, Brundi, Tunisia, South Sudan, Togo, Sierra Leone, Libya, Congo, Liberia, Central African Republic, Mauritania, Eritrea, Namibia, Gambia, Botswana, Gabon, Lesotho, Guinea-Bissau, Mauritius, Eswatini, Djibouti, Comoros, Cabo Verde, Seychelles, Reunion, Western Sahara, Mayotte, Saint Helena, Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, Brunei, Cambodia, Cyprus, East Timor, Cyprus, Georgia, Indonesia, Iran, Iraq, Israel, Japan, Kazakhstan, Jordan, Kyrgyzstan, Lebanon, Malaysia, Maldives, Mongolia, Myanmar, Nepal, North Korea, Palestine, Philippines, Saudi Arabia, Singapore, South Korea, Sri Lanka, Syria, Tajikistan, Thailand, Turkey, Taiwan, Uzbekistan, Vietnam, Yemen, Albania, Andorra, Austria, Belarus, Belgium, Bosnia & Herzegovina, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Norway, Netherlands, Poland, Portugal, Romania, Russia, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, Vatican City, Antigua & Barbuda, Anguilla, The Bahamas, Barbados, British Virgin Island, Canada, Cayman Island, Costa Rica, Cuba, Dominica, Greenland, Haiti, Jamaica, Martinique, Mexico, Navassa Island, Panama, Puerto Rico, Saint Lucia, Trinidad & Tobago, Argentina, Brazil, Bolivia, Chile, Ecuador, Colombia, Guyana, Paraguay, Peru, Uruguay, Venezuela, Australia, Fiji, Marshall Island, New Zealand, Papua New Guinea, Samoa, Solomon Islands & Tuvalu. .