Lincoln Chromet 9 Stick (SMAW) Welding Rod

Product Overview

The Lincoln Chromet 9 Stick (SMAW) Welding Rod is a modified 9% chromium, 1% molybdenum (9Cr-1Mo-V) low-hydrogen SMAW electrode classified to AWS A5.5M E9015-B91 H4. Chromet 9 is engineered for welding Grade 91 (P91) creep-resistant steels — developed for high-temperature, high-pressure service in advanced power generation plants where long-term creep strength and low-cycle fatigue resistance at temperatures up to 650°C are critical requirements.

Specifications

• Classification: E9015-B91
• AWS Classification: AWS A5.5M E9015-B91 H4
• ISO: BS EN ISO 3580-B E 6216-9C1MV
• Alloy: Modified 9CrMo with Nb, V, N additions (P91/Grade 91 type)
• Coating: Basic low-hydrogen moisture-resistant
• Polarity: DC+ (DCEP)
• Preheat/interpass: 200–300°C minimum
• PWHT: 760°C / 2h minimum
• X-factor (<15 ppm) and J-factor (<120 ppm) controlled

Applications

Welding Grade 91 (P91) 9CrMoVNb steels for ultra-supercritical power generation boilers, steam turbine casings, headers, main steam piping, and hot reheat piping. Also for repair welding of P91 components and fabrication of power plant pressure parts to ASME Section I and Section VIII requirements.

Key Features

• Grade 91 (P91) composition — 9Cr-1Mo-V modified for superior long-term creep resistance
• H4 moisture-resistant coating minimizes diffusible hydrogen for crack-free welds
• Weld metal chemistry respects X-factor (<15 ppm) and J-factor (<120 ppm)
• Specifically designed for high-integrity structural service at elevated temperature
• Certified AWS A5.5M E9015-B91 H4
• Available in 1/8 in and 5/32 in diameters

Mechanical Properties (After PWHT 760°C/2h — Typical)

Available Diameters & Package Sizes

Product Family (Combined Listing)

This Combined Listing parent page aggregates all package sizes and diameters for the Lincoln Chromet 9 Stick (SMAW) Welding Rod product family. Use the variant selector or browse individual child listings to find your specific size and packaging configuration.