Atomized Low Alloy Sinter-Hardening Metal Powders
Ancorsteel® 721 SH: Ancorsteel® 721 SH is a water atomized, prealloyed steel powder specifically developed for sinter hardening. It complements Ancorsteel® 737 SH as it contains slightly lower levels of molybdenum and nickel. Ancorsteel® 721 SH may be used for applications where the slightly higher hardenability of Ancorsteel® 737 SH is not required. With good compressibility and stable dimensional change Ancorsteel® 721 SH is the powder of choice for small to medium size parts that are to be sinter hardened.
Ancorsteel®737SH: Is a water atomized, prealloyed atomized steel powder specifically developed for heat treatment by either the sinterhardening process or conventional quenching and tempering. The primary characteristics center on excellent hardenability in conjunction with good compressibility, particularly at higher compaction pressures. This unique combination of attributes differentiates its performance and optimizes both static and dynamic strength. Low sintered growth, resulting in higher sintered densities, along with stable dimensional response are major hallmarks which enhance suitability for a wide range of demanding applications. In some instances, the exceptional hardenability provides a means of sinter-hardening without requiring accelerated cooling equipment or high percentages of admixed additions.
Ancorsteel® 4600V: Is a water atomized low alloy metal powder containing nickel, molybdenum, and manganese which satisfies Metal Powder Industries Federation (MPIF) material specification FL-4600. Ancorsteel 4600V is particularly useful for conventional P/M parts requiring greater hardenability than is possible when using admixed or diffusion alloyed powders. It has good compressibility and green strength, enabling parts to be made easily to densities above 6.7 g/cm3. The use of nickel and molybdenum as the principal alloying elements permits Ancorsteel 4600V to be processed using conventional P/M, temperatures and atmospheres. Ancorsteel 4600V, because of its high degree of cleanliness and uniform chemistry, is ideally suited for powder forging (P/F) applications that require the hardenability and mechanical properties associated with cast and wrought steels. Part densities of 7.60 to 7.86 g/cm3 can be obtained using hot forming pressures of 415–1100 MPa (30–80 tsi).