High Quality Wholesales AISI 8620 1.6523 21NiCrMo2 SNCM220 Carbon Steel Round Bar
1: 8620 steel introduction
AISI 8620 Steel is a low alloy nickel, chromium, molybdenum case hardening steel, generally supplied in the as rolled condition with a maximum hardness HB 255max. SAE steel 8620 offers high external strength and good internal strength, making it highly wear resistant. AISI 8620 steel has a higher core strength than grades 8615 and 8617.SAE 8620 alloy steel is flexible during hardening treatments, thus enabling improvement of case/core properties. Pre hardened and tempered (uncarburized) 8620 can be further surface hardened by nitriding but will not respond satisfactorily to flame or induction hardening due to its low carbon content
2: 8620 Steel equivalent
| Country | Japan | Germany | Britain | USA |
| Standard | JIS G4103 | DIN 1654 | BS970 | ASTM A29 |
| Grade | SNCM220 | 21NiCrMo2/1.6523 | 805M20 | 8620 |
3: 8620 steel chemical composition
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
| 8620 | 0.18-0.23 | 0.15-0.35 | 0.7-0.9 | 0.035 | 0.04 | 0.4-0.6 | 0.15-0.25 | 0.4-0.7 |
| 1.6523 | 0.17-0.23 | 0.4 | 0.65-0.95 | 0.035 | 0.035 | 0.4-0.7 | 0.15-0.25 | 0.4-0.7 |
| 805M20 | 0.17-0.23 | 0.1-0.4 | 0.6-0.9 | 0.03 | 0.03 | 0.35-0.65 | 0.15-0.3 | 0.4-0.7 |
| SNCM220 | 0.17-0.23 | 0.15-0.35 | 0.6-0.9 | 0.03 | 0.03 | 0.4-0.65 | 0.15-0.25 | 0.4-0.7 |
4: 8620 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: 8620 steel overviews
| Size | Round | Dia 6-1200mm |
| Plate/Flat/Block | Thickness 6mm-500mm | |
| Width 20mm-1000mm | ||
| 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 | |
| Application | 8620 alloy steels are used for Arbors, Bearings, Bushings, Cam Shafts, Differential Pinions, Guide Pins, King Pins, Pistons Pins, Gears, Splined Shafts, Ratchets, Sleeves and other applications where it is helpful to have a steel that can be readily machined and carburized to controlled case depths. | |
6: Delivery condition
For hot forged bar, usually the delivery condition is hot forged, annealed/QT rough turned/Black surface.
For hot rolled bar, usually the delivery condition is hot rolled, annealed/QT, Black surface.
For hot forged plate, usually the delivery condition is hot forged, annealed/QT, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed/QT, black surface.
7. Alloy Round Bar 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 |
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.
Company Main Products:(If you do not find the product you need, please contact us)
Cold Work Tool Steel | DIN 1.2080,DIN 1.2379,DIN 1.2436,DIN 1.2210,JIS SKS3,AISI O2 |
Hot Work Tool Steel | H13,DIN 1.2714,DIN 1.2767,DIN 1.2344(H13),DIN 1.2713 |
Engineering Steel | AISI 1020,AISI 1045,AISI1050,AISI 5140,AISI 4130,AISI 4140(40CrMo4),AISI 4340, DIN 1.5919,AISI 8620,S235JR,S355JR |
Plastic Mould Steel | P20,P20+S,P20+Ni,DIN 1.2083,DIN 1.2316,DIN 1.2085 |
Spring Steel | AISI 9260,AISI 5160,AISI 6150,65MN,55CrMnA |
Stainless Steel | 316L,201,301,304,316,410,420,430,431,440C,SUS630(DIN1.4542) |
High Speed Steel | DIN 1.3343(M2),DIN 1.3243(M35),DIN 1.3247,DIN 1.3265 |
We are professional manufacturer for many years. we can provide a wide range of steel products.
Usually bundling for large diameter,small diameter bars in bulk or as customer's demand.
The hardness after heat treatment is higher than D2/1.2379/Cr12Mo1V1, and can reach 61-63HRC after high-temperature tempering (525 ± 5 ℃); In terms of strength and wear resistance, it exceeds Cr12Mo1V1, and its toughness is higher than D2/1.2379/Cr12Mo1V1; The manufactured molds rarely have cracks and fissures, greatly improving their service life; The residual stress after wire cutting processing is smaller than that of Cr12Mo1V1; The cutting and grinding performance exceeds Cr12Mo1V1.
Suitable for manufacturing precision punching dies and stamping dies for cold forging, deep drawing, and wire rolling for wire cutting processing.
