After-sales Service: | Quality Assurance |
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Warranty: | Three Years |
Standard: | AISI, ASTM, GB, JIS, DIN, BS |
Technique: | Forged |
Surface Treatment: | Polished |
Alloy: | Alloy |
Samples: |
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Customization: |
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JIS SKD8 | DIN X38CrCoWV4-4-4 Hot Work Tool Steel
Quick Details
1: JIS SKD8 steel introduction
SKD8 is the most widely used hot work die steel. It has a fairly good effect on thermal fatigue crack resistance, can ensure the quality of the die, improve the service life of the die.
2: JIS SKD8 Steel equivalent
Country | China | Japan | Germany | USA | UK |
Standard | GB/T 1299 | JIS G4404 | DIN EN ISO4957 | ASTM A681 | BS 4659 |
Grade | SKD8 | X38CrCoWV4-4-4 |
3: JIS SKD8 steel chemical composition
Grade | C | Mn | P | S | Si | Cr | V | Mo | ||||||
SKD8 | 0.40 | 0.35 | . . . | 0.01 | 0.25 | 4.35 | 2.00 | 0.40 | ||||||
X38CrCoWV4-4-4 |
0.35 | 0.45 | 0.20 | 0.50 | 0.03 | 0.02 | 0.15 | 0.50 | 4.00 | 4.70 | 1.70 | 2.10 | 0.30 | 0.50 |
4: JIS SKD8 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: JIS SKD8 steel overviews
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 | SKD8 can be used to manufacture hot forging die, extrusion die, copper alloy die, aluminum copper magnesium hot press molding die, plastic die, etc.. |
6: Heat treatment
Hot-working treatment : 900-1100 ºC
Annealing : temperature 820-870 ºC, holding time 2-4h, slow cooling to about 500 ºC, air cooling out of the furnace.
Quenching | salt bath furnace: 1010 / ºC
Quenching | controlled atmosphere furnace: 1020/ ºC
Tempering temperature / ºC : 550
After tempering hardness HRC or higher: 60
7: Delivery condition
For hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed, rough turned.
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.
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 |
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Width 20mm-2000mm |
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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 |
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