| After-sales Service: | Yes |
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| Warranty: | Three Years |
| Type: | Alloy Steel Bar |
| Standard: | AISI, ASTM, GB, JIS, DIN, BS |
| Technique: | Forged |
| Application: | Structural Steel Bar |
| Samples: |
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| Customization: |
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Suppliers with verified business licenses
Audited Supplier GB 3Cr2W8V JIS SKD5 DIN 1.2581/X30WCrV9-3 AISI H21 Round Steel Bar
1: AISI H21 steel introduction
H21 steel is a hot sham W-Cr-Mo Tungsten hot take steps steel partner ASTM A681-1999 Steel Grade suitable. H21 Special Steel China Supplier and factory SAE Special Steel Supply H21 Tool steel in Round bar, Plate, Flat bar, Square, Forging Ring and others any swap. And have the funds for choking, sawing, milled, machining paperwork.
| Country | China | Japan | Germany | USA | UK |
| Standard | GB/T 1299 | JIS G4404 | DIN EN ISO4957 | ASTM A681 | BS 4659 |
| Grade | 3Cr2W8V | SKD5 | 1.2581 | H21 |
| Grade | C | Si | Mn | P | S | Cr | W | V |
| H21/T20821 | 0.26~0.36 | 0.15~0.50 | 0.15~0.40 | 0.030 Max | 0.030≤ | 3.00~3.75 | 8.50~10.0 | 0.30~0.60 |
| 1.2581/ X30WCrV9-3 | 0.25~0.35 | 0.15~0.30 | 0.20~0.40 | 0.035 Max | 0.035 ≤ | 2.50~2.80 | 8.00~9.00 | 0.30~0.40 |
| 3Cr2W8V | 0.30~0.40 | ≤0.40 | ≤0.40 | 0.030 Max | 0.030 ≤ | 2.20~2.70 | 7.50~9.00 | 0.20~0.50 |
| SKD5 | 0.25~0.35 | 0.10~0.40 | 0.15~0.45 | 0.030 Max | 0.020 ≤ | 2.50~3.20 | 8.50~9.50 | 0.30~0.50 |
The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.
| Size | Round | Dia 6-1200mm |
| Plate/Flat/Block | Thickness 6mm-500mm |
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| Width 20mm-1000mm |
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| Process | EAF+LF+VD+Forged+Heat treatment(optional) | |
| 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 per customers request. | |
| Delivery time | 30-45 days | |
| Application | H21 steel is a Mo content increased by 2%, take possession of to colleague the Mn content, enlarged the high temperature mechanical properties of steel, to run abandoned to the demands of the gathering production of aluminum alloy die-casting mould. The steel has high adaptableness, high heat stability, pleasurable resistance to wear and process play a role, the operational temperature of 650. | |
6: Heat Treatment
Annealing
Heat to 885C, later cool in heat treatment at not quite 4C per hour. After annealing Hardness 235 HBS Max.
Hardening and Quenching
Quenching | salt bath furnace: 1177 / ºC
Quenching | controlled atmosphere furnace: 1191 / ºC
Heat preservation time: 5 ~ 15 mins
Quenching medium: air cooling
Tempering
Tempering temperature / ºC : 552
After tempering hardness HRC or higher: 52
For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.
Hunan Qilu Industrial Co., Ltd has the capacity to forge round steel, steel flat, square steel, module, shaft and roller, etc. The main specifications of the products include Φ80-1000mm forging materials and 80-1200mm square billets and which the maximum piece weight can reach 50T.
Hunan Qilu Industrial Co., Ltd were already engaged in exporting steel for 11 years, could supply a great variety of hot forged, hot rolled and cold drawn Steels, including engineering steel, cold work tool steel, hot work tool steel, plastic mold steel, spring steel, high speed steel, stainless steel etc., besides Qilu Industrial also has their own heating treatment shop and machining shop to provide heating and cutting service.
Since 2008 year, Hunan Qilu Industrial has the right to export all FORGED STEEL behalf of Qilu Speical Steel Co.,ltd which is specialized in smelting and forging of special steel since 1965 year, now Qilu special steel is one of the biggest manufacturer of forged product in China.The forged products are used in Automotive, Aerospace, Power Generation, Oil & Gas, Transportation and Industrial. We already set up the warehouse in Wuxi and Dongguan city, more than 20000 tons ex-stock could be supplied with kinds of size.
Qilu Industrial is the professional one-stop steel manufacturer, stockist and exporter in China, our customers spread all over the world, include West Europe, North America, South America, Asia, Middle Asia, Africa, Australia, etc.
The company owns advanced special steel smelting facilities and forging processing equipments, the main steel-making equipment include 2 sets of 50t ultra-high power electric arc furnaces,2 sets of 60t LF refining furnaces,1 set of 60t vacuum degassing refining furnace and 4 sets of 1-20t electroslag re-melting furnaces.
The main forging equipments mainly include:3 sets of 5t electro-hydraulic hammers, 1 set of high-speed forging units of 800t,1600t,2000t and 4500t respectively.
Suppliers with verified business licenses
Audited Supplier 
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