Description
We are professional 2.4694,NiCr16Fe7TiA round bars for Diesel Engines Exhaust Valves ,Internal Combustion Engine Valves,2.4694,NiCr16Fe7TiA bars for heavy duty exhaust valves of diesel truck and locomotive from china
2.4694,NiCr16Fe7TiA is an age-hardenable nickel-chromium-iron alloy. The hardenability is obtained by means of addition of titanium, niobium and aluminum that form strengthening precipitates during heat treatment. It can be delivered in a solution-annealed or hardened condition. It is generally used in the age-hardened condition.
Due to its high strength up to 820 °C (1,508 °F) and its excellent corrosion resistance, 2.4694,NiCr16Fe7TiA can be used in a wide range of applications. A typical application is exhaust valves of combustion engines.
Melting method of 2.4694,NiCr16Fe7TiA is Vacuum+ESR or VAR
FOllowing is chemical compostion of 2.4694,NiCr16Fe7TiA
Nickel (+ Cobalt) ..........................................................70.0 min.
Chromium....................................................................14.0-17.0
Iron ..................................................................................5.0-9.0
Titanium...........................................................................2.0-2.6
Aluminum ........................................................................0.9-1.5
Niobium (+ Tantalum) ......................................................0.7-1.2
Manganese ...................................................................1.0 max.
Silicon ...........................................................................0.5 max.
Sulfur ..........................................................................0.01 max.
Copper..........................................................................0.5 max.
Carbon........................................................................0.10 max
The hardness of 2.4694,NiCr16Fe7TiA round bars required for test piece in solution treated and aged conditio shall be as follows:
a)Hardness Value 30-40 RC min.
Hardness required in supply condition 25-35 RC
GRAIN SIZE of 2.4694,NiCr16Fe7TiA round bars According to standard ASTM E-112.
NON METALIC INCLUSION LEVEL: For 2.4694,NiCr16Fe7TiA round bars
Type A and D inclusions: maximum 2½ thin and thick series (ASTM E-45). Avoid chains.
Type B and C Inclusions: maximum 2½ thin and thick series (ASTM E-45). Avoid chains.
The most common heat treatments of 2.4694,NiCr16Fe7TiA round bars is as following:
In general, the heat treatment of 2.4694,NiCr16Fe7TiA consists of two stages:
1. Solution annealing between 980 and 1,010 °C (1,796 and 1,850 °F) for min. 0.5 hours, followed by rapid cooling down.
2. Hardening annealing between 700 - 780 °C (1,292 - 1,436 °F) for 2-4 hours followed by air cooling.
For every heat treatment, the material should be inserted into the furnace already heated up to the annealing temperature and the information provided in the section “Heating” should be observed.
ALl our finished 2.4694,NiCr16Fe7TiA round bars should be accepted by the QC department of the manufacturer by conducting the following
examinations:
1) external examination;
2) a check of dimensions and marking;
3) chemical composition examination;
4) mechanical tests;
5) macrostructure examination;
6) residual stress measurement;
7) ultrasonic testing;
8) periscopic testing.
The following details shall be furnished in the test certificate of finished 2.4694,NiCr16Fe7TiA round bars:
Heat No. , and melting type.
Dimensional inspection
Details of heat treatment cycle followed.
Results of chemical analysis including tramp elements.
Results of mechanical tests, including hardness test. All individual values shall be reported.Results of ultrasonic tests
Results of surface crack examination
Confirmation of the visual inspection
Confirmation of the verification inspection
Results of additional tests called for in the drawing/order.
Welcome your inquiry of 2.4694,NiCr16Fe7TiA round bars
2.4694,NiCr16Fe7TiA is an age-hardenable nickel-chromium-iron alloy. The hardenability is obtained by means of addition of titanium, niobium and aluminum that form strengthening precipitates during heat treatment. It can be delivered in a solution-annealed or hardened condition. It is generally used in the age-hardened condition.
Due to its high strength up to 820 °C (1,508 °F) and its excellent corrosion resistance, 2.4694,NiCr16Fe7TiA can be used in a wide range of applications. A typical application is exhaust valves of combustion engines.
Melting method of 2.4694,NiCr16Fe7TiA is Vacuum+ESR or VAR
FOllowing is chemical compostion of 2.4694,NiCr16Fe7TiA
Nickel (+ Cobalt) ..........................................................70.0 min.
Chromium....................................................................14.0-17.0
Iron ..................................................................................5.0-9.0
Titanium...........................................................................2.0-2.6
Aluminum ........................................................................0.9-1.5
Niobium (+ Tantalum) ......................................................0.7-1.2
Manganese ...................................................................1.0 max.
Silicon ...........................................................................0.5 max.
Sulfur ..........................................................................0.01 max.
Copper..........................................................................0.5 max.
Carbon........................................................................0.10 max
The hardness of 2.4694,NiCr16Fe7TiA round bars required for test piece in solution treated and aged conditio shall be as follows:
a)Hardness Value 30-40 RC min.
Hardness required in supply condition 25-35 RC
GRAIN SIZE of 2.4694,NiCr16Fe7TiA round bars According to standard ASTM E-112.
NON METALIC INCLUSION LEVEL: For 2.4694,NiCr16Fe7TiA round bars
Type A and D inclusions: maximum 2½ thin and thick series (ASTM E-45). Avoid chains.
Type B and C Inclusions: maximum 2½ thin and thick series (ASTM E-45). Avoid chains.
The most common heat treatments of 2.4694,NiCr16Fe7TiA round bars is as following:
In general, the heat treatment of 2.4694,NiCr16Fe7TiA consists of two stages:
1. Solution annealing between 980 and 1,010 °C (1,796 and 1,850 °F) for min. 0.5 hours, followed by rapid cooling down.
2. Hardening annealing between 700 - 780 °C (1,292 - 1,436 °F) for 2-4 hours followed by air cooling.
For every heat treatment, the material should be inserted into the furnace already heated up to the annealing temperature and the information provided in the section “Heating” should be observed.
ALl our finished 2.4694,NiCr16Fe7TiA round bars should be accepted by the QC department of the manufacturer by conducting the following
examinations:
1) external examination;
2) a check of dimensions and marking;
3) chemical composition examination;
4) mechanical tests;
5) macrostructure examination;
6) residual stress measurement;
7) ultrasonic testing;
8) periscopic testing.
The following details shall be furnished in the test certificate of finished 2.4694,NiCr16Fe7TiA round bars:
Heat No. , and melting type.
Dimensional inspection
Details of heat treatment cycle followed.
Results of chemical analysis including tramp elements.
Results of mechanical tests, including hardness test. All individual values shall be reported.Results of ultrasonic tests
Results of surface crack examination
Confirmation of the visual inspection
Confirmation of the verification inspection
Results of additional tests called for in the drawing/order.
Welcome your inquiry of 2.4694,NiCr16Fe7TiA round bars
