Name: XM-19HS
Brand: Ever Nickel
Price: 99.99 USD
Availability: InStock
Rating: 4.8 (50 reviews)

XM-19HS

XM-19 – HS/EHS is a nitrogen-strengthened austenitic stainless steel that can be supplied in the cold worked or warm worked condition (it is also known as Nitronic® 50 – a trademark owned by AK Steel Corporation). Although very small diameter bars of XM-19 (<2.25”) can be cold worked to achieve higher strength levels, larger section sizes can only achieve dramatically increased mechanical properties by deforming at raised temperatures. This results in a deformed and partly recrystallised micro structure that is ‘stress free’, achieves high strengths with good ductility and consistent properties through the bar (unlike cold worked material). The superior properties of XM-19 HS/EHS are available up to 9” diameter bars.

Chemical Composition

	Cr	Ni	Mo	Co	Nb (+Ta)	Ti	V	W	Cu	C	Mn	N	Si	P	S	Fe	Al
Min	20.50	11.50	1.50		0.10		0.10				4.00	0.20
Max	23.50	13.50	3.00		0.30		0.30			0.06	6.00	0.40	1.00	0.045	0.030	Bal

Mechanical Properties

	Fermonic® 50 - High Strength (cold worked condition, up to 1.5” /38mm diameter or section)		Fermonic® 50 - High Strength (cold worked condition, bars between 1.5”-2.25” /38mm – 57mm diameter or section)		Fermonic® 50 - High Strength (warm worked condition)		Fermonic® 50 – Extra High Strength
0.2% Proof Stress	862 N/mm2	125 ksi	725 N/mm2	105 ksi	725 N/mm2	105 ksi	827 N/mm2	120 ksi
Tensile Strength	1000 N/mm2	145 ksi	827 N/mm2	125 ksi	896 N/mm2	125 ksi	930 N/mm2	135 ksi
Elongation, 5.65√S0 and 4D	12%		15%		20%		20%

Notes:

Testing shall be carried out in accordance with ASTM A370 or EN ISO 6892-1 (tensile), EN ISO 6506-1 (hardness)

Minimum properties quoted (tested at room temperature in a longitudinal direction)

Testing performed on each melt of material per heat treatment batch

Physical Properties

Density (Kg/m3)	7880
Magnetic Permeability (20°C)	<1.02
Young’s Modulus (kN/mm2)	197
Specific Electrical Resistance, 20°C (µΩ-m)	0.82
Mean coefficient of thermal expansion, 20-100°C (m/m/°C)	17.9 x 10-6
Specific Heat, 20°C (J/kg.K)	475
Thermal conductivity, 20°C (W/m.K)	13.3
Fracture Toughness, KQ (MPa/m2)

A brief history of XM-19HS

Originally developed as a high-strength version of XM-19 (Nitronic 50), XM-19HS was engineered to provide exceptional tensile strength and superior corrosion resistance. By enhancing nitrogen and manganese content and utilizing precise heat treatment techniques, the standard XM-19HS achieves a minimum tensile strength of 1000 MPa, as outlined in industry specifications. However, through advanced manufacturing processes, our facility is capable of producing XM-19HS materials with tensile strengths exceeding 1250 MPa, meeting the demands of the most extreme applications in critical environments.

Common applications

XM-19HS is widely used in industries where high strength and superior corrosion resistance are required. In marine environments, it is employed in pump shafts, propeller shafts, fasteners, and structural components that must endure constant exposure to saltwater. In chemical processing, XM-19HS is used for valves, heat exchangers, and piping systems exposed to acidic and chloride-laden conditions. Offshore and renewable energy industries also rely on this alloy for critical applications, such as drill collars, risers, and structural supports, where high tensile strength is essential for operational safety and performance.

Resistance to corrosion and strength

XM-19HS offers excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking, even in highly aggressive environments. The standard alloy provides a minimum tensile strength of 1000 MPa, but through our advanced production capabilities, we can achieve tensile strengths above 1250 MPa, making it one of the most robust austenitic stainless steels available. Its high nitrogen content significantly enhances localized corrosion resistance and mechanical strength, while maintaining excellent toughness and ductility across a broad temperature range, from cryogenic to elevated temperatures.

Modern Innovations

Our facility’s innovative heat treatment and forging technologies have pushed the performance boundaries of XM-19HS, enabling the production of materials with unmatched tensile strength and reliability. These advancements have expanded its applications to include next-generation marine systems, deep-sea exploration equipment, and high-stress industrial components. With its superior mechanical properties and corrosion resistance, XM-19HS continues to set the standard for high-performance alloys in the most challenging environments.