35CrMo Alloy Steel Bar - High-Strength Quenched & Tempered Round Bar

35CrMo alloy steel bar represents a premium-grade chromium-molybdenum engineering material specifically designed for applications demanding exceptional mechanical strength and toughness. This quenched and tempered round bar finds extensive application in heavy machinery, automotive components, and oil extraction equipment where superior tensile properties and fatigue resistance are critical. Manufactured to stringent international standards including GB/T 3077 and DIN 17200, our 35CrMo steel bars serve manufacturers requiring reliable performance in high-stress environments ranging from crankshafts to drill collars.

What is 35CrMo Alloy Steel Bar?

35CrMo alloy steel bar is a low-alloy structural steel containing approximately 0.32-0.40% carbon, 0.80-1.10% chromium, and 0.15-0.25% molybdenum. The combination of chromium and molybdenum provides enhanced hardenability and improved mechanical properties after heat treatment, making it the preferred choice for components subjected to cyclic loading and impact stresses.

35CrMo Alloy Steel Bar Technical Specifications

Our 35CrMo round bars comply with GB/T 3077-2015 standards with tensile strength ranging from 985 MPa to 1180 MPa in quenched and tempered condition. The material exhibits a yield strength minimum of 835 MPa and elongation of 12% minimum. Chemical composition is precisely controlled with carbon content between 0.32-0.40%, manganese 0.40-0.70%, silicon 0.17-0.37%, chromium 0.80-1.10%, and molybdenum 0.15-0.25% per mass fraction requirements.

Why Choose Our 35CrMo Steel Bars

We supply mill-direct 35CrMo alloy steel bars with comprehensive material test certificates including chemical analysis and mechanical property reports. Our manufacturing facility maintains ISO 9001:2015 certification and utilizes advanced electric arc furnace technology followed by vacuum degassing treatment to ensure exceptional purity levels with sulfur and phosphorus content limited to 0.035% maximum each. Available in diameters from 16mm to 300mm with length options up to 12 meters, our inventory supports both standard stock sizes and custom cutting services.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard minimum order quantity for 35CrMo alloy steel bars is 5 metric tons per specification. For stock diameter sizes between 40mm-150mm, we can accommodate smaller trial orders starting from 1 metric ton with adjusted pricing. Mixed container loading is available for customers requiring multiple diameter ranges.

Do you provide material test certificates?

Yes, we provide comprehensive material test certificates with every shipment including EN 10204 3.1 mill test certificates. Documentation includes chemical composition analysis, tensile testing results, impact toughness values at specified temperatures, and hardness measurements. Third-party inspection services from SGS, BV, or TUV can be arranged upon request.

What is the typical delivery time?

For standard stock sizes in quenched and tempered condition, delivery time is typically 15-20 working days from order confirmation. Custom diameter requirements or special heat treatment specifications may extend lead time to 25-35 working days depending on production scheduling. Express processing is available for urgent requirements with expedited manufacturing fees.

Can you cut to custom sizes?

We offer precision cutting services with tolerance of ±5mm for length specifications. Our facility is equipped with automated sawing equipment capable of processing bars up to 300mm diameter. Custom length cutting, chamfering, and center drilling services are available. For applications requiring tight dimensional tolerances, we provide turned and polished bars with diameter tolerance of h9 or better.

Get a Competitive Quote for 35CrMo Alloy Steel Bar

Contact our technical sales team today to receive factory-competitive pricing for 35CrMo alloy steel bars tailored to your project specifications. We provide detailed quotations including material cost, processing fees, and logistics solutions within 24 hours. Our engineering support team can assist with material selection, heat treatment recommendations, and mechanical property optimization for your specific application requirements.