Precipitation Hardening Bolting (UNS N07718) for High Temperature Service
Adfast Component LTD proudly offers premium-quality ASTM A1014/A1014M precipitation hardening bolting materials (UNS N07718), designed specifically for high-temperature service. Our bolting materials are manufactured using advanced processes, including multiple-melting with consumable electrode practices in the remelt cycle or induction melting under vacuum. These materials are fully heat-treated to meet the dimensional requirements of Specification B637 for UNS N07718. Ensuring exceptional strength and durability, the bolting components conform to a tensile strength of 185 KSI [1275 MPa] and are subjected to rigorous full-size tensile testing for quality assurance.
Our bolting material’s microstructure is meticulously crafted to be free of freckles, white spots, and Laves phases, ensuring reliable performance under extreme conditions. With threads showing evidence of cold working due to rolling and grain sizes as fine as ASTM No. 5 or finer, these components exhibit superior mechanical properties. Forged bolting components display continuous flow lines across threads, shanks, heads, fillets, and bearing surfaces, ensuring unmatched durability and performance. Choose Adfast Component LTD for industry-leading bolting materials that meet AS 7467 and ASTM specifications.
| Element | UNS N07718 (Formerly Grade 718) |
|---|---|
| C, max. | 0.08 |
| Mn, max. | 0.35 |
| Si, max. | 0.35 |
| P, max. | 0.015 |
| S, max. | 0.015 |
| Cr | 17.0-21.0 |
| Co, max.A | 1.0 |
| Mo | 2.80-3.30 |
| Nb + | 4.75-5.50 |
| Ta | . . . |
| Ti | 0.65-1.15 |
| Al | 0.20-0.80 |
| B, max. | 0.006 |
| FeB | Remainder |
| Cu, max. | 0.30 |
| NiC | 50.0-55.0 |
| |
| Properties | Room Temperature | Elevated Temperature |
|---|---|---|
| Tensile strength, min, ksi [Mpa] | 185 [1275] | 1200 [650] |
| Yield Strength, min, ksi, [Mpa] 0.2 % offset | 150 [1035] | 125 [860] |
| Elongation in 2 in., or 50 mm (or 4D) min % | 12 | 12 |
| Reduction of area, min, % | 15 | 15 |
| Hardness, Brinell | 331-444 | … |
Product Shall be Marked with our manufacturing trade mark adfast component along with the designated Grade.
Grade and manufacturer’s identification symbols shall be applied to one end of studs and to the heads of bolts and screws of all sizes. (If the available area is inadequate, the grade symbol may be marked on one end and the manufacturer’s identification symbol marked on the other end.) For bolts and screws smaller than 1⁄4 in. [6 mm] in diameter and studs smaller than 3⁄8 in. [10 mm] in diameter and for 1⁄4 in. [6 mm] in diameter studs requiring more than a total of three symbols, the marking shall be a matter of agreement between the purchaser and the manufacturer.
B18.31.2 Imperial Continious Thread, Double End Reduced & Full Body Studs
B18.31.1M Metric Continious Thread, Double End Reduced & Full Body Studs
B16.5 Imperial Full Thread Stud Bolts
B16.5 Metric Full Thread Stud Bolts
B18.2.1 Imperial Square and Hex Bolts and Screws
B18.2.3.1M Metric Hex Cap Screws
B18.2.3.3M Metric Heavy Hex Screws
B18.2.3.5M Metric Hex Bolts
B18.3 Imperial Hexagon Socket and Spline Socket Screws
B18.3.1M Metric Socket Head Cap Screws
B18.6.7M Metric Machine Screws
B18.2.2 Imperial Square, Hex, Heavy Hex, Lock, Heavy Hex Lock Nuts
B18.2.4.1M Metric Hex Nuts
B18.2.4.6M Metric Heavy Hex Nuts
ISO 4033 Hexagon High Nuts
ISO 4032 Hexagon Nuts
ISO 4035 Hexagon Lock Nuts
| S1 | Protective Atmosphere |
|---|---|
| S2 | Cleaning |
| S3 | Fillet Rolling |
| S4 | Forged Heads |
| S5 | Marking |
| S6 | Thread Rolling |