ASTM A325 / A325M Heavy Hex Structural Bolts
The bolts are intended for use in structural connections. These connections are covered under the requirements of the Specification for Structural Joints Using ASTM A325 Bolts, approved by the Research Council on Structural Connections, endorsed by the American Institute of Steel Construction and by the Industrial Fastener Institute.
Dimension: ASME B18.2.6 (Inch Size), ASME B18.2.3.7M (Metric Size)
Thread Size: 1/2"-1.1/2", M12-M36, with various lengths
Grade: ASTM A325 / A325M Type-1
Finish: Black Oxide, Zinc Plating, Hot Dip Galvanized, Dacromet, and so on
Packing: Bulk about 25 kgs each carton, 36 cartons each pallet
Advantage: High Quality and Strict Quality Control, Competitive price,Timely delivery; Technical support, Supply Test Reports
Please feel free to contact us for more details.
In 2016, ASTM A325 was officially withdrawn and replaced by ASTM F3125, in which A325 now becomes a grade under the F3125 specification. The F3125 specification is a consolidation and replacement of six ASTM standards, including; A325, A325M, A490, A490M, F1852, and F2280.
Prior to its withdrawl in 2016, the ASTM A325 specification covered high strength heavy hex structural bolts from 1/2″ diameter through 1-1/2″ diameter. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts.
This specification is applicable to heavy hex structural bolts only. For bolts of other configurations and thread lengths with similar mechanical properties, see Specification A449.
Bolts for general applications, including anchor bolts, are covered by Specification A449. Also refer to Specification A449 for quenched and tempered steel bolts and studs with diameters greater than 1-1/2″ but with similar mechanical properties.
ASTM A325
Scope The ASTM A325 specification covers high strength heavy hex structural bolts from ½” diameter through 1-1/2” diameter. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts. Refer to the Structural Bolts page of our site for thread lengths and other related dimensions. This specification is applicable to heavy hex structural bolts only. For bolts of other configurations and thread lengths with similar mechanical properties, see Specification A 449. Bolts for general applications, including anchor bolts, are covered by Specification A 449. Also refer to Specification A 449 for quenched and tempered steel bolts and studs with diameters greater than 1-1/2"" but with similar mechanical properties.| TYPE 1 | Medium carbon, carbon boron, or medium carbon alloy steel. |
| TYPE 2 | Withdrawn November 1991. |
| TYPE 3 | Weathering steel. |
| T | Fully threaded A325. (Restricted to 4 times the diameter in length) |
| M | Metric A325. |
| SC | Slip critical connection. |
| N | Bearing type connection with threads included in the shear plane. |
| X | Bearing-type connection with threads excluded from the shear plane. |
| Size | Tensile, ksi | Yield, ksi | Elong. %, min | RA %, min |
| 1/2 - 1 | 120 min | 92 min | 14 | 35 |
| 1-1/8 - 1-1/2 | 105 min | 81 min | 14 | 35 |
| Nuts | Washers | |||
| Type 1 | Type 3 | Type 1 | Type 3 | |
| Plain | Galvanized | Plain | ||
| A563C, C3, D, DH, DH3 | A563DH | A563C3, DH3 | F436-1 | F436-3 |
| Note: Nuts conforming to A194 Grade 2H are a suitable substitute for use with A325 heavy hex structural bolts. The ASTM A563 Nut Compatibility Chart has a complete list of specifications. | ||||
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PERNOS CONECTORES N’AKRON PARA FORJADOS COLABORANTES
N’akron es líder en la distribución de pernos conectores gracias al inmediato suministro de cualquier cantidad y cualquier medida. Nuestra empresa es número uno en suministro de perno conector para forjados colaborantes, chapa colaborante y placa colaborante.
El sistema welding stud es básico para estructuras mixtas de hormigón fijado a la viga de acero mediante soldadura. Somos fabricantes de perno conector, shear connector y welding stud.
Somos especialistas en el suministro de conectores como elementos de fijacion indispensables en la instalacion de laminas de entrepiso metalico.
El perno conector N’akron es un elemento metálico, cilíndrico con cabeza que va soldado al perfil actuando como anclaje en el hormigón frente a los esfuerzos de tracción, transmitiendo esfuerzos por adherencia o por presiones de contacto según la tipología constructiva. Solidarizando así el acero y el hormigón en una pieza mixta.
La rápida fijación de los conectores, tanto en el taller como en la obra reduce de tres a cuatro veces el tiempo de colocación con respecto a una soldadura manual y por tanto los costos de instalación.
Los pernos auto-soldables eliminan todos los problemas relativos a la perforación de elementos estructurales, al debilitamiento de las piezas a trabajar y al sellado de las perforaciones evitando así filtraciones.
Dispositivo para solidarizar el acero y el hormigón en una pieza mixta. Son elementos metálicos, cilíndricos con cabeza que van soldados al perfil actuando como anclaje en el hormigón frente a los esfuerzos de tracción, transmitiendo esfuerzos al hormigón por adherencia o por presiones de contacto, según la tipología constructiva.
Además de este aspecto básico que justifica su necesidad en vigas mixtas, deben cumplir otras funciones como:
– descartar la posibilidad de rotura frágil que puede producirse cuando su separación es excesiva;
– garantizar la unión entre la cabeza del hormigón y el perfil metálico sin tener en cuenta otros factores como adherencia, rozamiento, etc., cuya posible pérdida también podría originar rotura frágil;
– permitir la aplicación de cargas directas sobre el elemento metálico sin peligro de despegue entre hormigón y acero;
– evitar que la conexión quede íntegramente en la posible zona de hormigón traccionado, ya que su función quedaría disminuida por la fisuración
– asegurar la capacidad de transmisión ante una posible inversión en el signo de los esfuerzos rasantes;
– establecer la adecuada correlación entre el cálculo y el comportamiento de la pieza durante el proceso resistente.
Soldados con la técnica de soldeo por arco revenido con férula cerámica o gas de protección.
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Perno conector de corte, conector de corte, soldadura de pernos, soldadura de conectores, venta de pernos, venta de pernos conectores, distribución de pernos conectores, distribución de pernos
Device used to solidarize the steel and the concrete all in one piece .
Are metal, cylindrical acting as anchors in the concrete against the tensile stress , efforts transmitted to the concrete by adhesion or by contact pressure , depending on the type of construction .
In addition to this basic issue it must perform other functions such as:
- Rule out the possibility of brittle fracture that can occur when the separation is excessive;
- Ensure the joint between the concrete and the metal profile without considering other factors such as adhesion, friction, etc. , Whose potential loss could also lead to brittle fracture ;
- Allow the application of direct charges on the metallic element safely take-off between concrete and steel;
- Prevent the connection to be entirely in the tensioned concrete area , avoiding fisuration ;
- Ensure the transmission capacity by a possible inverted sign of the flush efforts ;
- Establish adequate correlation between the calculation and behavior of the part during tough process .
Welded technic by arc welding with ceramic ferrule or tempering gas protection.
TECHNICAL DATA
The geometry , dimensions and tolerances of the N’AKRON SD1-A connectors are represented in the accompanying figures. The shape of the base is slightly concave with rounded edges (A ) and is finished with flux in the form of aluminum ball fixed by pressure, which, when arc melt , it cleans and deoxidize the surface area of the metal base .
The dimensions of the ceramic ferrules which are used as auxiliary element for welding are designated below .