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H21
Qilu
Product Description
Flat H21 SKD5 1.2581 X30WCrV9-3 Hot Work Tool Steel 3Cr2W8V
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.
H21 Steel Stock In Warehouse
2: H21 Quality Standard
ASTM-A681-2008 ENG Standard-Specification-for-Tool-Steel-Alloy.pdf
3: AISI H21 Steel Equivalent
| 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 | / |
4: AISI H21 Steel Chemical Composition
| 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 |
5: AISI H21 Steel Mechanical Properties
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.
6: AISI H21 Steel Overviews
| Size | Round | Dia 6-1200mm | |
| Plate/Flat/Block | Thickness 6mm-500mm | ||
| Width 20mm-1000mm | |||
| 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 | ||
7: H21 Steel 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.
8: H21 Steel 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 / ℃
Quenching | controlled atmosphere furnace: 1191 / ℃
Heat preservation time: 5 ~ 15 mins
Quenching medium: air cooling
Tempering
Tempering temperature / ℃ : 552
After tempering hardness HRC or higher: 52
9: H21 Steel Tolerance
Diameter(mm) | Tolerance | ||
Forged Steel Round Bar | 80-600 | Black Surface:0~+5 | Rough Machined or Turned:0~+3 |
650-1200 | Black Surface:0~+15 | Rough Machined or Turned:0~+3 | |
Hot Rolled Steel Round Bar | 16-310 | Black Surface:0~+1 | Peeled:H11 |
Cold Drawn Steel Round Bar | 6-100 | Black Surface:H11 | Peeled:H11 |
10: Delivery Condition
For hot forged bar, usually the delivery condition is hot forged, annealed rough turned/Black surface.
For hot rolled bar, usually the delivery condition is hot rolled, annealed, Black surface.
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.
