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JIS SKD7 | DIN 1.2365 | BS BH10 | ASTM H10 Hot Work Tool Steel
Quick Details
1: ASTM H10 steel introduction
H10 tool steel is one hot works tool steel in ASTM A681 standard, which is for alloy tool steel. The ASTM/AISI classifies chromium hot work tool steels as group H steels, ranging from H10, H11, h12 to H19. AISI H10 Tool Steel is one of chromium hot work tool steel that exhibits excellent resistance to softening at elevated temperature.
H10 Tool Steel is capable of being heat treated to higher hardness than the tungsten hot work steels, and in addition offers greater toughness. H10 tool steel has good thermal fatigue characteristics, and unlike the tungsten hot work steels and H10 hot work tool steels may be safely water cooled in service.
H10 hot works tool steel is recommended for difficult hot work tooling applications such as hot punches, die casting dies, forging dies, hot shear blades, hot gripper dies, and extrusion tooling etc.
2: ASTM H10 steel equivalent
| Country | China | Japan | Germany | USA | UK |
| Standard | GB/T 1299 | JIS G4404 | DIN EN ISO4957 | ASTM A681 | BS 4659 |
| Grade | SKD7 | 1.2365/32CrMoV12-28 | H10/T20810 | BH10 |
3:ASTM H10 steel chemical composition
| Grade | C | Mn | P | S | Si | Cr | V | Mo | ||||||
| H10/T20810 | 0.35 | 0.45 | 0.20 | 0.70 | 0.03 | 0.03 | 0.80 | 1.25 | 3.00 | 3.75 | 0.25 | 0.75 | 2.00 | 3.00 |
| 1.2365/ 32CrMoV12-28 |
0.28 | 0.35 | 0.15 | 0.45 | … | … | 0.10 | 0.40 | 2.70 | 3.20 | 0.40 | 0.70 | 2.50 | 3.00 |
| SKD7 | 0.28 | 0.35 | 0.15 | 0.45 | 0.03 | 0.03 | 0.10 | 0.40 | 2.70 | 3.20 | 0.40 | 0.70 | 2.50 | 3.00 |
| BH10 | 0.30 | 0.40 | … | 0.40 | 0.35 | 0.35 | 0.75 | 1.10 | 2.80 | 3.20 | 0.30 | 0.50 | 2.65 | 2.95 |
4: ASTM H10 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.
5:ASTM H10 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.. | |
| Delivery time | 30-45 days | |
| Packing | Standard Packages, or as Customers Request | |
| Application | ASTM H10 tool steel are suitable for highly stressed hot work tools, mainly for the processing of heavy alloys, such as: Extrusion Industry: Dies, Inner Liners, Stems, Pressure Pads, Mandrels for Extrusion, Forging Industry: Forming Dies, Press Dies, Pressing Mandrels, Die Casting Industry: dies for die-casting, die inserts, hot shear blades, moulds for processing brass and light metal | |
6.Heat Treatment
Annealing
Heating slowly and uniformly to 750~790ºC, furnace cooling to
600ºC at a rate 10~20ºC/hr, further cooling in air. Hardness after annealing: max. 205 HB. Suitable precautions must be taken to prevent excessive carburization or decarburization.
Stress relieving
600 to 650°C (1112 to 1202°F) Slow cooling in furnace; intended to relieve stresses set up by extensive machining, or in complex shapes. After through heating, hold in neutral atmosphere for 1 -2 hours.
Hardening
H10 steel is a very deep hardening steel, and although oil quenching may be used where maximum hardness is required, air hardening is recommended for most applications. The use of salt bath or controlled atmosphere furnace is desirable to minimize decarburization, and if not available, pack hardening spent pitch temperature employed is usually in the range of 982°C -1037°C.
1010 to 1050°C (1850 to 1922°F) Oil, salt bath (500-550°C / 932-1022°F), Holding time after temperature equalization: 15 to 30 minutes. Obtainable hardness: 52 -56 HRC
Tempering
Slow heating to tempering temperature immediately after hardening / time in furnace 1 hour for each 20 mm of work piece thickness but at least 2 hours / cooling in air. It is recommended to temper at least twice. A third tempering cycle for the purpose of stress relieving may be advantageous 1st tempering approx. 30°C (86°F) above maximum secondary hardness. 2nd tempering to desired working hard-ness. The tempering chart shows average tem-pered hardness values. 3rd for stress relieving at a temperature 30 -50°C (86 to 122°F) below highest tempering temperature
7: Delivery condition
For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.
| GB GB/T 1299 |
JIS JIS G4404 |
DIN (W-Nr.) DIN EN ISO4957 |
AISI/ASTM ASTM A681 |
BS BS 4659 |
| Cold Work Tool Steel | ||||
| Cr12 | SKD1 | 1.2080/X210Cr12 | D3 | |
| Cr5Mo1V | SKD12 | 1.2363/X100CrMoV5 | A2/T30102 | BA2 |
| Cr12MoV | 1.2601 | D5 | ||
| Cr12Mo1V1 | SKD11 | 1.2379/X153CrMo12 | D2 | |
| X210CrW12 | SKD2 | 1.2436 | D6 | |
| 9CrWMn | SKS3 | 1.2510/100MnCrW4 | O1 | |
| 9Mn2V | 1.2842 / 90MnCrV8 | O2 | B02 | |
| 5CrNiMo | SKT4 | 1.2713 | L6/T61206 | BH224/5 |
| Hot work Tool Steel | ||||
| 1.2355/50CrMoV13-15 | S7/T41907 | |||
| 5CrNiMoV | 1.2714 | 6F3 | ||
| 5CrNi4Mo | 1.2767 | 6F7 | ||
| SKD7 | 1.2365/32CrMoV12-28 | H10/T20810 | BH10 | |
| 4Cr5MoV | SKD6 | 1.2343/X37CrMoV5-1 | H11/T20811 | BH11 |
| 4Cr5MoSiV1 | SKD61 | 1.2344/X40CrMoV5-1 | H13 | |
| SKD62 | 1.2605/X35CrWMoV5 | H12/T20812 | BH12 | |
| 3Cr2W8V | SKD5 | 1.2581 | H21 | |
| Plastic Mould Steel | ||||
| 3Cr2Mo | 1.2311 | P20 | ||
| NAK80 | 1.2312 | P20+S / P21 | ||
| 3Cr2MnNiMo | 1.2738 | P20+Ni / 718 | ||
| 4Cr13 | SUS420J2 | 1.2083 | 415 | |
| 3Cr17+S | SUS420F | 1.2085 | ||
| 3Cr17Mo | SUS420J | 1.2316 | ||
| Engineering Steel | ||||
| GB GB/T 699 |
JIS JIS G4051 |
DIN (W-Nr.) EN 10083-2 |
AISI/ASTM ASTM A20 |
EN / BS |
| 1018 | EN2C | |||
| 20 | S20C | C20/1.1151 | 1020 | EN3B /070M20 |
| S35C | C35 | 1035 | ||
| 1040 | EN8/080M40 | |||
| 45 | S45C | C45/1.1191 | 1045 | EN8D/C45E |
| 50 | S50C | 1050 | ||
| S55C | 1055 | EN9/070M55 | ||
| Q345 | S355/ST52-3/1.1170 | EN14/150M19 | ||
| GB GB/T 3077 |
JIS JIS G4105/JIS G4103 |
DIN (W-Nr.) EN 10250 |
AISI/ASTM ASTM A29 |
BS BS 970 |
| 40Cr | SCr440 | 41Cr4(1.7035) | 5140 | |
| SCM420 | 18CrMo4/1.7243 | 4118 | ||
| 30CrMo | SCM430 | 25CrMo4/1.7218 | 4130 | 708A25/708M25 |
| 42CrMo | SCM440 | 42crmo4/1.7225 | 4140 | EN19/709M40 |
| 4145 | ||||
| 4330 | ||||
| 40CrNiMoA | SNCM 439/SNCM8 | 36CrNiMo4/1.6511 | 4340 | EN24/817M40 |
| 40NiMoCr10-5/1.6745 | EN26 | |||
| 34CrNiMo6 / 1.6582 | 4337 | |||
| 30CrNiMo16-6/1.6747 | EN30B/835M30 | |||
| 32CrMo12/1.7361 | EN40B/722M24 | |||
| SCM415 | 16MnCr5 / 1.7131 | 5115 | ||
| 15CrNi6/1.5919 | 3115 | |||
| 16NiCr4/1.5714 | EN351/635M15 | |||
| 4615/4617 | EN34/665M17 | |||
| 14NiCr4/1.5752 | 3310/3415 | EN36/655M13 | ||
| 15NiCrMo16-5/1.6723 | EN39/835M15 | |||
| 18CrNiMo7-6 (1.6587) | 4815 | |||
| SNCM220 | 1.6523/21NiCrMo2 | 8620 | 805M20 | |
| 20CrNiMo5 | EN353 | |||
| GCr15 | 52100/1.3505 | EN31/535A99 | ||
| Stainless Steel | ||||
| SUS440C | X105CrMo17/1.4125 | S44004/440C | ||
| Wear-resisting Steel | ||||
| GB | JIS | DIN (W-Nr.) | AISI/ASTM | SSAB |
| NM400 | HB400 | |||
| NM500 | HB500 | |||
| Spring Steel | ||||
| GB | JIS | DIN (W-Nr.) | AISI/ASTM | SSAB |
| 65MN | 1066 | |||
| 60Si2Mn | SUP6 | 60Si7 | 9260 | |
| 60Si2MnA | SUP7 | 60Si7 | 9260 | |
| 55CrMnA | SUP9 | 55Cr3 | 5155 | |
| 60CrMnA | SUP9A | 5160 | ||
| 50CrVA | SUP10 | 51CrV4 | 6150 | |
| High Speed Steel | ||||
| GB | JIS JIS G4403 |
DIN (W-Nr.) DIN EN ISO 4957 |
AISI/ASTM ASTM A600 |
BS BS 4659 |
| SKH51 | 1.3343 | M2 | ||
| SKH55 | 1.3243/HS6-5-2-5 | M35 | ||
| SKH59 | 1.3247/HS2-9-1-8 | M42 | ||
| SKH2 | HS18-0-1/1.3355 | T1 | ||
| SKH3 | S 18-1-2-5/1.3255 | T4/T12004 | ||
| SKH4 | 1.3265/S18-1-2-10 | T5/T12005 | BT5 | |
| All kinds of forging parts according to Drawing | ||||
| Size | Round | Dia 8-1200mm |
| Plate/Flat/Block | Thickness 10mm-800mm |
|
| Width 20mm-2000mm |
||
| 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.. | |
| Delivery time | 30-45 days | |
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.
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.
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