Standard Specification for ASTM A1014 Precipitation Hardening Bolting (UNS N07718) for high Temperature Service.
This specification covers precipitation hardening alloy Inconel 625 (UNS N07718) Bolting for high temperature service. ASTM A1014 covers imperial sized bolts whereas ASTM A1014M is a complete metric companion. ASTM A1014 prescribes requirements for chemical, mechanical properties, tests, ordering information, heat treament, etc. Starting material used for these high strength bolting should comply with ASTM B637 UNS N07718. BoltPort can manufacture Bolts, Studs Bolts, Screws as per ASTM A1014 UNS N07718 grade specification. We can produce metric sizes from M6 to M100 & imperial sizes from 1/4 inch to 4 inch. Larger sizes can be made to order with customization. BoltPort offers these Inconel 625 bolting duly tested with EN 10204 Type 3.1 Certification.
ASTM A1014 Chemical Composition
| Element | UNS N07718 (Inconel 625) |
|---|---|
| Carbon, max | 0.08 |
| Manganese, max | 0.35 |
| Silicon, max | 0.35 |
| Phosphorus, max | 0.015 |
| Sulfur, max | 0.015 |
| Chromium | 17.00 - 20.00 |
| Cobalt, maxA | 1.00 |
| Molybdenum | 2.80 - 3.30 |
| Columbium + Tantalum | 4.75 - 5.50 |
| Titanium | 0.65 - 1.15 |
| Aluminum | 0.20 - 0.80 |
| Boron, max | 0.006 |
| IronB | Remainder |
| Copper, max | 0.30 |
| NickelC | 50.00 - 55.00 |
A If determind
BDetermined arithematically by difference
CNickel + Cobalt
ASTM A1014 Mechanical Properties
| Tensile and Hardness | |
| Tensile Strength, min, ksi [MPa] | 185 [1275] |
|---|---|
| Yield Strength, min, ksi [Mpa], 0.2% offset | 150 [1035] |
| Elongation in 2 inch, Or 50mm [4D], min, % | 12 |
| Reduction of Area, min, % | 15 |
| Hardness, Brinell | 331 - 444 |
| Stress Rupture Requirements | |
| Temperature, °F [°C] | 1200 [650] |
| Stress, ksi [Mpa] | 100 [690] |
| Hours, min | 23 |
| Elongation in 2 inch, Or 50mm [4D], min, % | 5 |
| Elevated Tensile Requirements | |
| Temperature, °F [°C] | 1200 [650] |
| Tensile Strength, min, ksi [Mpa] | 145 [1000] |
| Yield Strength, min, ksi [Mpa], 0.2% offset | 125 [860] |
| Elongation in 2 inch, Or 50mm [4D], min, % | 12 |
| Reduction of Area, min, % | 15 |
ASTM A1014 Heat Treatment
Solution Treatment
Material shall be solution heat treated at temperature within the range of 1725 to 1850°F [940 to
1010°C], held at the selected temperature for a time commensurate with cross sectional thickness, and
cooled at a rate equivalent to an air cool or faster.
Precipitation Heat Treatment
Material shall be heated to a temperature of 1235°F [720°C], held at temperature for eight hours
minimum, furnace cooled to 1150°F [620°] at 100°F [55°C] per hour, held at temperature for eight hours,
and cooled to room temperature. Alternatively, material may be furnace cooled to 1150°F [620°C] at any
rate provided the time at 1150°F [620°C] is adjusted so the total precipitation heat treatment time is
18 hours minimum.
| Staightening | Threads |
|---|---|
| When straightening is necessary it shall be done after solution treating and prior to agin. Straightening after aging is prohibited. | Threads shall be formed by rolling in one pass after oxides have been removed from the area to be threaded. |
ASTM A1014 Dimensions and Tolerance
Full heat treated material shall meet the dimensional requirements of specification ASTM B637 for UNS N07718.