Helical Inconel X-750 resistance wire spring - Heanjia Super-metals Co., Ltd.

Inconel News

Helical Inconel X-750 resistance wire spring

The number 1 temper inconel X-750 resistance wire is made toughened with the minor degree of cold reduction however its firmness is adequate to allow uniform coiling on the automatic machines. The spring temper wire has been cold processed to the limit that the heavy weight sustaining feature of the spring is considerably increased. Therefore the cold processing provides the large potential and more working stress though not about the service temperature ranges to the stress mitigating temperature.

The room temperature features of inconel X-750 resistance wire spring are mentioned here:

Condition	Tensile strength, ksi, dia 0.020"	Yield Strength, ksi, dia0.020"	Proportional Limit, ksi , dia 0.020"	Modulus of Elasticity, 10(3) ksi
No. 1 Temper
1950oF/15 min	120	43	34	31.0
1350oF/16 hr	202	141	93	31.2
1200oF/4 hr	178	109	77	30.4
Spring Temper
1950oF/15 min	130	104	81	30.8
1300oF/16 hr	274	268	168	31.6

The spring temper wire offers higher proportional limit without causing much resistance to relaxation at the intermediate temperature limits. The number 1 temper spring precipitation processed at 1350oF for 16 hours, weighted at 70 ksi and relaxed for 3% in 500 hours at the temperature of 800oF. On the other side the same spring produced of spring temper wire and precipitated by the same temperature of 1350oF for 16 hours and relaxed by 12%. The difference in relaxation is supposed to be the result of difference in the residual stress due to cold processing.

Therefore the highest force of cryogenic temperatures at 700oF, the spring temper condition precipitated at 1200oF for four hours. The room temperature shear characteristics of spring solution are provided in the below table:

Temper	Solution processing, oF/ hr	Precipitation Treatment oF/hr	Proportional Limit, ksi	Shear Modulus, 10 (3), ksi
Spring	2100/2,	1550/24,+ 1300/20	67.5	11.1
Spring	2100/1	1400/4	54.0	11.1
Spring	None	1350/16	93.5	11.2
No. 1	None	1350/16	90.5	9.9

The higher resistance to relaxation at temperature of 900oF, the number 1 temper is readily precipitation processed at 1350oF for 16 hours is recommended for springs. The service at temperature limits from 900oF to 1200oF , the spring should be prepared of spring temper alloy that is solution processed as well as stabilized and precipitation processed at 2100oF for 2 hours, 1550oF for 24 hours and 1300oF for 20 hours. The processed alloy wire provided by the three times heat treatment offers reduced proportional limit though the highest relaxation resistance at the 900oF to 1200oF under stress is lesser than the proportional range.

The high resistance to relaxation is obtained from the cold processing. The higher limit of cold processing on the wire is minimized by 15% is on its periphery. During the solution treatment the grain size is enhanced that was during the cold processing. Whereas the wire cold reduced by 30 to 65% is cold worked completely and symmetrical grains are produced through the cross section. Basically the relaxation force of inconel X-750 wire is higher with the uniform grain dimensions.

Next Page: Precipitation treatments of Inconel X ...

Product (745)

Product Forms (14)

Quality Certificate (11)

Learning Gallery (30)

Incoloy News (9)

Inconel News (22)

Molybdenum News (7)

Nikrothal News (4)

Nichrome News (13)

Titanium News (2)

Nickel News (8)

Alloys House (30)

Tools (27)

Nickel alloy News (30)

Latest Buzz (30)

nickel chrome copper iron alloys news (28)

Credit Report

Products Index

Company Info

Inconel News