- Overview
- Product Description
- Main Products
- Company Profile
- Recommend Products
- FAQ
Basic Info.
Product Description
Alloy Steel with 21nicrmo2 Distributor AISI 8620 Engineering Stainless Steel Pipe Big Stock Round Square Flat Plate Sheet Block Special Steel
Ningshing Precision Machinery began in 1992. We devote oneself to providing One-Stop Solutions to our customers on Tool Steel, Die Steel, Alloy Steel, Mold Base, Machining Parts, CNC Machine.
AISI 8620 alloy steel is a common, carburizing alloy steel. This alloy steel is flexible during hardening treatments, thus enabling improvement of case/core properties. The following datasheet will provide more details about AISI 8620 alloy steel.
Dimensions
Hot Rolled Round: dia.16-300 mm
Forged Round: dia.150-1200 mm
Cold Drawn Round: dia.6-30 mm
Forged Block: 150-1000 x 200-1900 mm
Delivery Condition
EAF+LF+VD, Hot Rolled or Forged or Cold Drawn, Annealed or Q+T, Black surface or Machined surface, UT SEP1921 Class3 C/c or D/d
Equivalence
| AISI / SAE | DIN / W.Nr | JIS | GB | ||
| 8620 | 21NiCrMo2 1.6523 | SNCM220 | 20CrNiMo | ||
| Other designations that are equivalent to AISI 8620 alloy steel include the following: | |||||
| AISI 8620 | AMS 6274 | AMS 6276 | AMS 6277 | AMS 6375 | ASTM A29 |
| ASTM A322 | ASTM A331 | ASTM A506 | ASTM A507 | ASTM A513 | ASTM A519 |
| ASTM A646 | ASTM A752 | ASTM A829 | MIL S-8690 | SAE J1397 | SAE J404 |
| AFNOR 20 NCD 2 | AFNOR 22 NCD 2 | DIN 1.6523 | UNI 20 NiCrMo 2 | JIS SNCM 21 | JIS SNCM 21 H |
| B.S. 805 H 20 | B.S. 805 M 20 | AMS 6274G | AMS 6276C | AMS 6277A | ASTM A505 |
| MIL SPEC MIL-S-16974 | SAE J404 | SAE J770 | |||
Chemical Composition (%)
| Steel Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
| 21NiCrMo2 1.6523 | 0.17-0.23 | ≤ 0.40 | 0.65-0.95 | ≤ 0.035 | ≤ 0.035 | 0.35-0.70 | 0.15-0.25 | 0.40-0.70 |
| 8620 | 0.18-0.23 | 0.15-0.35 | 0.70-0.90 | ≤ 0.030 | ≤ 0.040 | 0.40-0.60 | 0.15-0.25 | 0.40-0.70 |
Applications
The AISI 8620 can be used for a number of medium-strength applications such as camshafts, fasteners, gears, and chains/chain pins.
Mechanical Properties
The mechanical properties of annealed AISI 8620 alloy steel are outlined in the table below.
| Properties | Metric | Imperial |
| Tensile strength | 530 MPa | 76900 psi |
| Yield strength | 385 MPa | 55800 psi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Izod Impact | 115 J | 84.8 ft.lb |
| Hardness, Brinell | 149 | 149 |
| Hardness, Knoop (converted from Brinell hardness) | 169 | 169 |
| Hardness, Rockwell B (converted from Brinell hardness) | 80 | 80 |
| Hardness, Vickers (converted from Brinell hardness) | 155 | 155 |
| Machinability (hot rolled and cold drawn, based on 100 machinability for AISI 1212 steel) | 65 | 65 |
View more products, you can click product key words.
| Main Products | ||
| Steel Flat | Steel Plate | Die Steel |
| Plastic Mold Steel | Alloy Steel | Pre-machined Flat |
| Die Casting Die | Mold Base | Aluminum Die |
