Material for EM-Tec SEM stub gripper tweezers
Order EM-Tec SEM stub gripper tweezers
The material used for manufacturing the EM-Tec SEM stub gripper tweezers is a selected grade of non-magnetic AISI 304.
It is used for the following products:
#50-050012 EM-Tec 127G.AM SEM stub gripper tweezers for Ø12.7mm (1/2”) grooved pin stubs
#50-050019 EM-Tec 190G.AM SEM stub gripper tweezers for Ø19.0mm (1”) grooved pin stubs
#50-050025 EM-Tec 254G.AM SEM stub gripper tweezers for Ø25.5mm (3/4”) grooved pin stubs
#50-050032 EM-Tec 318G.AM SEM stub gripper tweezers for Ø32.0mm (1-1/4”) grooved pin stubs
#50-050013 EM-Tec 12.AM scissor type SEM stub gripper tweezers for Ø12.7mm (1/2”) grooved pin stubs
#50-050026 EM-Tec 25.AM SEM scissor type stub gripper tweezers for Ø25.5mm (3/4”) grooved pin stubs
#50-050110 EM-Tec 95.AM SEM stub gripper tweezers for Ø9.5mm JEOL cylinder stubs
#50-050112 EM-Tec 122.AM SEM stub gripper tweezers for Ø12.2mm JEOL cylinder stubs
#50-050150 EM-Tec 150.AM SEM stub gripper tweezers for Ø15.0mm Hitachi and ISI cylinder stubs
#50-050250 EM-Tec 250.AM SEM stub gripper tweezers for Ø25.0mm JEOL and Hitachi cylinder stubs
#50-050320 EM-Tec 320.AM SEM stub gripper tweezers for Ø32.0mm JEOL and Hitachi cylinder stubs
General remarks:
- AISI 304 is an austenitic stainless steel (DIN 1.4301, X5CrNi 18-10) and is the most common type of stainless steel
- Contains 18 – 20 wt% Chromium and contains significant amounts of Nickel as additional alloy component
- Normally non-magnetic, but becomes slightly magnetic when cold worked
- Can not be hardened by heat treatment
- Can be work hardened, annealing is recommended for stress relieving
- Good corrosion resistance to most solvents, salts and moderate acids
- Generally used where corrosion resistance is a requirement
- Typical applications include tweezers for microscopy, electronic industry, fine mechanics and laboratory
General composition of AISI 304
| Element | Wt. % |
C |
≤0.08 |
Cr |
18.0 – 20.0 |
Ni |
8.0 – 10.5 |
Mn |
≤2.0 |
Si |
≤1.0 |
P |
≤0.045 |
S |
≤0.03 |
Fe |
Balance |
Properties of AISI 304
| Mechanical Properties | |
State |
Annealed |
Density |
8.0 g/cm3 |
Hardness Brinell |
123 |
Hardness Rockwell B |
70 |
Hardness Vickers |
129 |
Tensile strength, ultimate |
505 MPa |
Tensile strength, yield |
215 MPa |
Yield stress, o.2% |
≤200 Mpa |
Elongation until break |
70% |
Modulus of Elasticity |
195 GPa |
Poisson's ratio |
0.29 |
Thermal Properties |
|
Coefficient of thermal linear expansion |
17.3 x 10-6 /°C (20-100°C) |
Coefficient of linear thermal expansion |
17.8 x 10-6/°C (20-300°C) |
Specific heat capacity |
0.50 J/(g.K) |
Thermal conductivity |
16.2W/(m.K) |
Continuous use (service) temperature |
325°C |
Maximum service temperature (short) |
870°C |
Electrical Properties |
|
Resistivity |
0.72 x 10-4 Ohm.cm |
TSB 50-001010 Material for EM-Tec SEM stub gripper tweezers Revision 1