# 300M Ultra-High-Strength Steel | Landing Gear Parts > 300M ultra-high-strength steel parts for aircraft landing gear and high-stress applications, with superior fracture toughness and fatigue resistance. https://www.sinbo-machining.com/products/materials/steel/300m-ultra-high-strength-steel/ --- ## On This Page - Quick Specifications - Service Overview - Steel Grades We Machine - Carbon Steel - Alloy Steel - Stainless Steel - Machining Capabilities - CNC Milling - CNC Turning - Surface Treatment - Industrial Applications - Machinery - Automotive - Industrial - Oil and Gas - Tooling - Medical - Why Choose Sinbo Precision - Certifications - Frequently Asked Questions - What is the minimum order quantity? - What is the typical lead time? - What file formats do you accept? - What steel grades can you machine? - Do you provide heat treatment services? - Do you provide design for manufacturing (DFM) support? - Related Products - 1018 Steel CNC Machined Parts - 1045 Steel Precision Components - 4140 Alloy Steel Parts - Heat Treated Steel Components - Manufacturing Capabilities - Quality Assurance - Ready to Get Started? [300M Ultra-High Strength Steel - Aircraft Landing Gear Components] [300M Ultra-High Strength Steel Detail View] [300M Ultra-High Strength Steel Application] [300M Ultra-High Strength Steel Dimensions] [300M Ultra-High Strength Steel Close-up] # 300M Ultra-High Strength Steel ## Quick Specifications Material All Steel Grades Process CNC Machining Tolerance ±0.005mm Lead Time 5-15 days MOQ 10 pieces Surface Finish Various Options [Get Instant Quote ](https://www.sinbo-machining.com/quote/)[Contact Us ](https://www.sinbo-machining.com/contact/) ## Service Overview Sinbo Precision offers comprehensive custom steel machining services for all steel grades, providing high-quality precision steel parts for diverse industrial applications. Our advanced CNC machining capabilities enable us to work with carbon steel, alloy steel, and stainless steel, delivering parts with tight tolerances of ±0.005mm and excellent surface finishes. With over 20 years of experience, we have the expertise to handle complex steel machining projects from prototype to production. Our steel machining services include CNC milling, CNC turning, 5-axis machining, and multi-axis turning capabilities. We work with a wide range of steel grades including 1018, 1045, 4140, 4340, 1215, 1144, 12L14, and various stainless steels such as 304, 316, 17-4 PH, and 440C. Each steel grade is machined using optimized parameters and tooling to ensure optimal results and cost-effectiveness. We provide complete manufacturing solutions including design for manufacturing (DFM) support, material selection guidance, and comprehensive surface treatment options. Our China factory and efficient logistics ensure fast delivery of your precision steel components. Whether you need low-volume prototypes or high-volume production runs, we have the capacity and expertise to meet your requirements with competitive pricing and superior quality. ## Steel Grades We Machine ### Carbon Steel Low and medium carbon steels for general applications with excellent machinability. - • 1018 Steel - • 1045 Steel - • 1215 Steel - • 1144 Steel - • 12L14 Steel ### Alloy Steel Alloy steels with enhanced mechanical properties for demanding applications. - • 4140 Steel - • 4340 Steel - • 8620 Steel - • 4130 Steel - • 4150 Steel ### Stainless Steel Corrosion-resistant stainless steels for harsh environments and medical applications. - • 304 Stainless - • 316 Stainless - • 17-4 PH Stainless - • 440C Stainless - • 316L Stainless ## Machining Capabilities ### CNC Milling Advanced CNC milling for complex geometries and tight tolerances. - • 3-axis milling - • 4-axis milling - • 5-axis milling - • High-speed milling ### CNC Turning Precision CNC turning for cylindrical and rotational parts. - • CNC lathe - • Swiss turning - • Multi-axis turning - • Live tooling ### Surface Treatment Comprehensive surface treatment options for enhanced performance. - • Polishing - • Black oxide - • Zinc plating - • Heat treatment ## Industrial Applications ### Machinery Gears, shafts, bushings, and general machinery components ### Automotive Engine components, transmission parts, and automotive hardware ### Industrial Industrial equipment, structural parts, and heavy-duty components ### Oil and Gas Oil field equipment, valve components, and drilling parts ### Tooling Tooling components, dies, molds, and precision tooling ### Medical Medical devices, surgical instruments, and healthcare equipment ## Why Choose Sinbo Precision 20+ Years Experience ±0.005mm Precision Tolerance 5-15 Days Lead Time 100% Quality Guarantee ## Certifications [ISO 9001:2015 Certification] ISO 9001:2015 [IATF 16949:2016 Certification] IATF 16949:2016 [ISO 14001:2015 Certification] ISO 14001:2015 ## Frequently Asked Questions ### What is the minimum order quantity? Our minimum order quantity is 10 pieces for prototypes and 100 pieces for production runs. We can accommodate lower quantities for development projects with appropriate setup considerations. ### What is the typical lead time? Standard lead time is 5-15 days depending on complexity, material, and quantity. Express delivery options are available for urgent requirements with 3-7 day turnaround. ### What file formats do you accept? We accept STEP, IGES, STL, DXF, DWG, and PDF files. Our engineering team can work with various CAD formats to ensure accurate manufacturing. ### What steel grades can you machine? We machine all steel grades including carbon steels (1018, 1045, 1215, 1144, 12L14), alloy steels (4140, 4340, 8620, 4130), and stainless steels (304, 316, 17-4 PH, 440C, 316L). ### Do you provide heat treatment services? Yes, we provide comprehensive heat treatment services including quenching, tempering, induction hardening, and flame hardening to achieve required hardness levels for steel components. ### Do you provide design for manufacturing (DFM) support? Yes, our engineering team provides free DFM analysis and suggestions to optimize your design for steel machining, ensuring cost-effective production while maintaining quality requirements. ## Related Products [1018 Steel CNC Machined Parts] ### 1018 Steel CNC Machined Parts Low carbon steel with excellent machinability [Learn More → ](1018-steel-cnc-machined-parts) [1045 Steel Precision Components] ### 1045 Steel Precision Components Medium carbon steel with high strength [Learn More → ](1045-steel-precision-components) [4140 Alloy Steel Parts] ### 4140 Alloy Steel Parts Chromium-molybdenum alloy steel [Learn More → ](4140-alloy-steel-parts) [Heat Treated Steel Components] ### Heat Treated Steel Components Heat treated steel with enhanced properties [Learn More → ](heat-treated-steel-components) ## Manufacturing Capabilities 50+ CNC Machines ±0.005mm Precision Tolerance 3-5 Days Delivery 15+ Years Experience ## Quality Assurance [ISO 9001:2015 Certification] ISO 9001:2015 [IATF 16949:2016 Certification] IATF 16949:2016 [ISO 14001:2015 Certification] ISO 14001:2015 [SA 8000:2014 Certification] SA 8000:2014 ## Ready to Get Started? Get a free quote within 24 hours. No minimum order quantity required. [Get Instant Quote ](https://www.sinbo-machining.com/quote/)[Contact Us ](https://www.sinbo-machining.com/contact/)