PH 13-8Mo (UNS S13800 / W.Nr. 1.4534)

PH 13-8Mo (UNS S13800 / W.Nr. 1.4534) is a martensitic precipitation/age-hardening stainless steel capable of high strength and hardness along with good levels of resistance to both general corrosion and stress-corrosion cracking. In addition, the alloy exhibits good ductility and toughness in large sections in both the longitudinal and transverse directions. The excellent properties of PH 13-8 Mo stainless are obtained through close control of chemical composition and microstructure plus specialized melting which reduces impurities and minimizes segregation. Compared to other ferrous-based materials, this alloy offers a high level of useful mechanical properties under severe environmental conditions.

Equivalent Grades

TrademarkGBGOSTASTMUNSDINW.Nr.NFBSJISSS
PH 13-8MoXM-13S13800X3CrNiMoAl13-8-21.4534

Chemical Composition, %

AlloyCSiMnPSCrNiMoNFe
PH 13-8Mo≤0.05≤0.10≤0.10≤0.01≤0.00812.25-13.257.5-8.52.0-2.5≤0.01Bal

Typical Physical and Mechanical Properties (RT, Annealed)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaELongation, %Hardness, HRB
7.61030-1130≥1140≥1210≥12/

Available Products and Specifications

Rod, Bar, Wire and ForgingsASTM A564, 705, SAE AMS 5629
Plate, Sheet and StripASTM A693, SAE AMS 5604
Pipe and Tube
Welding Product
Others

Features

PH 13-8 Mo stainless has good fabrication characteristics and can be age-hardened by a single low temperature treatment. Cold work prior to aging increases the aging, especially for lower aging temperatures.

Applications

PH 13-8 Mo stainless has been used for valve parts, fittings, cold-headed and machined fasteners, shafts, landing gear parts, pins, lockwashers, aircraft components, nuclear reactor components and petrochemical applications requiring resistance to stress-corrosion cracking. Generally, this alloy should be considered where high strength, toughness, corrosion resistance, and resistance to stress-corrosion cracking are required in a steel showing minimal directionality in properties.