Grade 19 Titanium Alloy Bar
SAE AMS 4957 – Bar and Wire
SAE AMS 4958 – Bar and Rod
ASTM B 348 Grade 19 – Bar and Billet
Grade 19 Titanium Alloy Bar
Grade 19 Titanium Alloy Bar (Ti-3Al-8V-6Cr-4Mo-4Zr, UNS R58640) represents LINHUI TITANIUM's advanced solution for extreme service conditions. Manufactured to SAE AMS 4957, SAE AMS 4958, and ASTM B 348 Grade 19 standards, our bars deliver tensile strengths exceeding 175 ksi (1200 MPa) after heat treatment. This metastable beta alloy resists stress corrosion cracking in H2S environments up to 500°F (260°C) and maintains superior cold formability.
With thickness tolerance controlled within ±0.05mm and 100% NDT inspection, you receive consistent mechanical properties across every shipment. Our direct mill supply ensures full traceability via EN 10204 3.1/3.2 certification.
Key Features & Benefits
Superior Corrosion Resistance
Your equipment faces less downtime in sour gas wells and acidic brines. The high chromium and molybdenum content prevents crevice corrosion where standard Ti-6Al-4V fails.
Tunable Mechanical Properties
You can specify solution treated (ST) condition for cold forming operations or solution treated and aged (STA) for maximum hardness. This flexibility reduces your inventory needs.
Weight Reduction
At 0.174 lb/in³ density, you achieve 40-50% weight savings versus steel in springs and fasteners while maintaining comparable strength.
Chemical Composition
The chemical composition of grade 19 Ti 3Al 8V 6Cr 4Zr 4Mo alloy is outlined in the following table.
| Element | Content (%) |
|---|---|
| Titanium, Ti | 75 |
| Vanadium, V | 8 |
| Chromium, Cr | 6 |
| Zirconium, Zr | 4 |
| Molybdenum, Mo | 4 |
| Aluminum, Al | 3 |
| Iron, Fe | ≤ 0.30 |
| Oxygen, O | ≤ 0.14 |
| Carbon, C | ≤ 0.050 |
| Nitrogen, N | ≤ 0.030 |
Manufacturing Process
Vacuum Arc Remelting (VAR)
We melt raw materials in vacuum chambers to eliminate inclusions. This creates a homogeneous microstructure critical for pressure vessel components.
Hot Forging & Rolling
Billets are forged above the beta transus temperature, then rolled using controlled cooling rates. You receive bars with uniform grain structure and predictable mechanical response.
Heat Treatment
Solution treatment at 760-790°C followed by water quenching produces the ductile beta phase. Aging at 480-540°C for 8 hours develops peak hardness for your application.
Quality Inspection
· Ultrasonic testing per ASTM E 428 detects internal flaws >1mm
· Chemical analysis via optical emission spectroscopy ensures composition tolerance ±0.1%
· Tensile and hardness testing on every heat lot
· Dimensional inspection with CMM accuracy to ±0.02mm
· Third-party witness testing available (SGS, TÜV, DNV)
Applications Of Grade 19 Titanium Alloy Bar
Oil & Gas Downhole Tools
Your logging instruments and packer mandrels operate safely in HPHT wells containing 15% H2S concentration. NACE MR0175 compliance prevents sulfide stress cracking.
Aerospace Springs & Fasteners
Landing gear components benefit from 70% weight reduction versus steel while maintaining fatigue life exceeding 10⁷ cycles.
Geothermal Energy Systems
Pump shafts and valve stems in 250°C geothermal brines resist pitting corrosion for 20+ year service intervals.
Export Markets
LINHUI TITANIUM serves customers across 60+ countries:
· North America: USA, Canada, Mexico
· Europe: Germany, UK, France, Norway
· Middle East: UAE, Saudi Arabia, Qatar
· Asia-Pacific: Japan, South Korea, Singapore
· South America: Brazil, Ecuador, Venezuela
Why Choose Us
24 Years Manufacturing Experience
Since 2000, we've supplied 500,000+ tons of titanium products to PEMEX, PETRONAS, and LUKOIL. Your projects benefit from our proven track record.
Flexible Order Quantities
Trial orders start at 100 kg. Stock items ship within 3-7 days, while custom diameters require 25-40 days.
Engineering Support
Our metallurgists assist with material selection, heat treatment specifications, and failure analysis at no extra cost.
Packaging & Shipping
Each Grade 19 Titanium Alloy Bar bundle includes:
· Plastic caps on bar ends to prevent scratching
· Wooden crates with moisture-proof wrapping for sea freight
· Heat number labels on every piece
· MTC documentation per EN 10204 3.1
Typical lead times: Air freight 5-8 days, sea freight 20-35 days to major ports.
FAQ
Q: Can you provide bars under 10mm diameter?
A: Yes, we produce wire-grade bars down to 6mm per AMS 4957 for spring manufacturing.
Q: What's the minimum order quantity?
A: Stock diameters (20-100mm) have 100 kg MOQ. Custom sizes require 500 kg minimum.
Q: Do you offer solution treated and aged condition?
A: Absolutely. Specify STA condition for hardness 36-42 HRC during ordering.
Q: Is this alloy compatible with seawater desalination plants?
A: Yes, Grade 19 outperforms Grade 5 in hot brine environments above 150°C due to higher corrosion resistance.
Q: Can you machine bars to near-net shape?
A: Our CNC facilities handle turning, milling, and thread rolling. Send drawings for quotation.
Request a Quote
Are you ready to tackle corrosion resistance and weight challenges with Grade 19 Titanium Alloy Bar? Contact our technical team at linhui@lhtitanium.com with your specifications. Receive detailed quotations within 4 hours and material certifications within 24 hours.
