Estamos comprometidos a brindar un servicio integral para productos de tubería de acero a clientes de todo el mundo.
Applications :
Molds for pressing of chemically-aggressive plastic substances etc. All kinds of silicon steel sheet and high-speed blanking die. Precise stamping die. Cold extruding forming die. Cavitations Molds, Standard Mould Base, Compression Mould for SMC, blowing mould, Pet preform mold, plastic piping & plumbing injection molds.
Chemical composition %
|
C |
Si |
Mn |
Ni |
P |
S |
Cr |
Mo |
|
0.33 – 0.45 |
max 1 |
max 1.5 |
max 1 |
max 0.03 |
max 0.03 |
15.5 – 17.5 |
0.8 – 1.3 |
Smelting Option
1 EAF: Electric Arc Furnace
2 EAF+LF+VD: Refined-smelting and vacuum degassing
3 EAF+ESR: Electro Slag Remelting
4 EAF+PESR: protective atmosphere Electro Slag Remelting
5 VIM+PESR: Vacuum induction melting
Forming Option
1 Hot rolling process
2 Hot Forging: Electro-hydraulic; High-speed-hydraulic; Oil-hydraulic; Precision-forging
Heat-treatment Option
1 +A: Annealed (full/soft/spheroidizing)
2 +N: Normalized
3 +NT: Normalized and tempered
4 +QT: Quenched and tempered (water/oil)
Suface Option
1 Black Surface
2 Grounded: Bright but rough ; Not precision
3 Machining for plate: Bright and precision; Little turning scar
4 Peeled/Turned: Bright and precision; Little turning scar
5 Polished: Very Bright and precision size; Not turning scar
Other Services
1 Cutting: Small pieces
2 CNC Machine: Produce as your drawing
3 Package: Bare/Nylon/Canvas/Wooden
4 Payment:T/T, L/C, O/A(request credit)
5 Transport:FOB/CFR/CIF/DDU/DDP (train/ship/Air)
MECHANICAL PROPERTIES
|
Yield |
Tensile |
Impact |
Elongation |
Reduction in cross section on fracture |
As-Heat-Treated Condition |
Brinell hardness (HBW) |
|
116 (≥) |
695 (≥) |
23 |
33 |
11 |
Solution and Aging, Annealing, Ausaging, Q+T,etc |
443 |
HEAT TREATMENT:
already pre-toughened; usually no heat treatment required
Soft
annealing:
760 to 800 °C for about 4 to 5 hours; slow controlled cooling of 10 to 20 °C
per hour to about 650 °C; further cooling in air, max. 230 HB
Hardening:
1030 to 1050 °C 15 to 30 minutes keeping curing
temperature quenching in water/oil obtainable hardness:
49 HRC
Tempering:
Slow heating to tempering temperature immediately after hardening. Minimum time
in furnace: 1 hour per 20 mm part thickness
