1066
Qilu
Product Description
GB 65MN 1066 Spring Steel
1: AISI 1066 Steel Introduction
1066 steel is a Chinese GB standard spring steel grade. Its strength, hardness, elasticity and hardenability are higher than that of 65# steel, but it has superheat sensitivity, easy to produce quench crack and temper brittleness. The annealed state has good machinability, and the cold deformation plasticity is low, but the weldability is poor.
1066 steel Stock in warehouse
2: 1066 Quality Standard
3: AISI 1066 Steel Equivalent
| Country | China | Japan | Germany | USA | British |
| Standard | GB/T 1222 | JIS G4801 | DIN (W-Nr.) EN 10089 | AISI/SAE/ASTM ASTM A29 | BS |
| Grade | 65Mn | / | / | 1066 | 080A67 |
4: AISI 1066 Steel Chemical Composition
| Grade | C | Si | Mn | P | S | Cr | Ni |
| 1066 | 0.6-0.71 | / | 0.85-1.15 | 0.04 | 0.05 | / | / |
| 65Mn | 0.62-0.70 | 0.17-0.37 | 0.90-1.20 | ≤ 0.035 | ≤ 0.035 | ≤ 0.25 | ≤ 0.25 |
5: AISI 1066 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, please kindly contact the salesman.
6: AISI 1066 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 | |
7: AISI 1066 Steel Application
1066 high carbon steel is mainly used in the manufacture of various small-section flat springs, round springs, clockwork, etc. It can also be used to manufacture spring rings, valve springs, shock absorbers, clutch reeds and brake springs, regulating speed regulating spring, spring load, general machinery in the round, square spiral spring or pull wire for small mechanical spring.
8: AISI 1066 Steel Heat Treatment
Annealing
At first Slowly heated to 730 ℃ and allow enough times, let the steel to be thoroughly heated, Then cool slowly in the furnace. Then 65Mn tool steel will get MAX 250 HB （Brinell hardness）.
Hardening
At the beginning, 65Mn steels should be heated uniformly to 830-860°C (1526-1580°F) until completely heated through. After about 30 min per 25 mm of ruling section is to be provided and then the steels should be immediately quenched in oil.
Tempering
65Mn steels is performed at 540°C, Soak well at the selected temperature and soak for at least one hour per 25mm of total thickness. Hardness values at different temperatures after tempering.
9: Delivery condition
For hot forged rolled bar or hot forged/hot rolled bar, usually the delivery condition is hot forged or rolled, annealed/QT, rough turned/Black surface or hot rolled, annealed/QT, Black surface.
For hot forged or hot rolled plate, usually the delivery condition is hot forged, annealed/QT, milled surface/Black surface or hot rolled, annealed/QT, black surface.
