Premium AISI 4140, 4130, 4340, and specialty low alloy steel grades. High-strength steel for demanding applications with worldwide delivery.
ASTM/AISI StandardsHeat Treatment AvailableMill Test Certificates
Choose from our comprehensive selection of high-strength alloy steels
Versatile chromium-molybdenum alloy steel with excellent strength and toughness
Chromium-molybdenum steel with good weldability and moderate strength
Nickel-chromium-molybdenum steel for high strength applications
Modified chromium-molybdenum steel with enhanced properties
Nickel-chromium-molybdenum steel with good core strength
Low alloy steel for high-temperature pressure vessel service
Superior performance characteristics for demanding applications
Superior strength-to-weight ratio compared to carbon steel
Responds well to heat treatment for optimized properties
Maintains properties at elevated temperatures
Machines well in annealed condition
Suitable for wide range of industrial applications
Extensively used in critical applications worldwide
Low alloy steel solutions for critical industries worldwide
Critical components for upstream, midstream, and downstream operations
High-performance components for aircraft and space applications
Durable components for high-performance vehicles and machinery
Reliable materials for power plants and energy infrastructure
Optimize properties with professional heat treatment services
Soft condition for machining and forming
Uniform grain structure with moderate strength
Optimized strength and toughness
Reduced residual stresses
HowcoPrime is a leading online supplier of premium low alloy steel including AISI 4140, 4130, 4145, 4340, 8630, and F22 grades. We supply low alloy steel in bars, tubes, plates, and custom shapes with worldwide shipping and mill test certificates.
We maintain large inventory of AISI 4140, 4130, 4145, 4340, 4330V, 8630, F22, and other low alloy grades. All grades are available for immediate shipping with full material certifications and heat treatment options.
Low alloy steel prices vary by grade, heat treatment condition, quantity, and current steel market prices. Contact us for competitive quotes on 4140, 4130, 4340, and other alloy steels. We offer bulk pricing and volume discounts.
Our low alloy steel is available in round bars (0.25" to 20" diameter), flat bars, seamless tubes, plates, sheets, forgings, and custom machined components. We stock standard sizes and can supply custom dimensions.
Selection depends on strength requirements, hardenability, and application. AISI 4140 offers good balance of strength and toughness, 4130 for weldable applications, 4340 for high strength requirements, and F22 for high-temperature service.
Yes, we provide complete heat treatment services including annealing, normalizing, quenching and tempering, stress relieving, and custom heat treatment cycles with full documentation and mechanical property certification.
Get competitive pricing on high-quality low alloy steel with complete material certifications, heat treatment options, and fast delivery worldwide.