316H  is high-carbon molybdenum-bearing austenitic heat-resistant stainless steel bright bar, high-temperature enhanced variant based on 316. Carbon is controlled 0.04%~0.10%, higher than 316, 316L and 316Ti, Cr 16.0~18.0%, Ni 10.0~14.0%, Mo 2.0~3.0%, single-phase austenite and nearly non-magnetic after solution annealing.
High carbon delivers dual strengthening via solid-solution hardening and dispersed high-temperature carbide precipitation, greatly improving stress rupture strength and creep resistance at 500~700℃. Its allowable stress under high temperature is far superior to 316/316L, resisting creep deformation and fracture under long-term high-temperature pressure, specially designed for high-temperature pressure vessels in boilers, thermal power and petrochemical industries.

Chemical element content (%)

Specification：1.00~300.00mm

Application: It is mainly used to manufacture boiler superheater & reheater mandrels, thermal power steam pipe fasteners, petrochemical cracking furnace high-temperature valve stems, pressure-bearing bars for high-temperature heat exchangers, medium-high temperature shafts for waste incineration equipment, high-temperature reactor fittings for oil & gas, high-temperature high-pressure flanges, power plant auxiliary high-temperature bolts, steam circulation valve spools, metallurgical heat exchange support shafts, small stressed parts for high-temperature chemical pressure vessels, etc.
Widely applied in thermal power boilers, petrochemical high-temperature cracking units, waste incineration waste heat boilers, nuclear power medium-temperature heat exchange equipment, high-temperature high-pressure steam pipelines, fine chemical high-temperature reaction devices, HVAC high-temperature heat exchange systems and other industries.

Core Advantages Over Competitors

1. High quality stability: Full closed-loop production and online spectral non-destructive inspection strictly control key elements C, Cr, Ni, Mo with carbon stably limited 0.04~0.10%. Uniform controllable austenitic grain structure ensures negligible batch fluctuation of high-temperature creep strength, stress rupture strength and corrosion resistance for consistent mass production of boiler and petrochemical high-temperature pressure parts.

2. Excellent surface quality: Dedicated high-precision cold drawing & centerless grinding lines produce bars free of scale, scratches and pits with smooth uniform finish. Smooth surface reduces alternating thermal stress concentration to extend fatigue life under hot-cold cycles; secondary polishing is unnecessary for most conventional machining.

3. Ultra-high dimensional accuracy: Precision cold rolling mills and automatic online dimension detectors narrow tolerance range with tiny single-bar error and strong batch uniformity. Unified part specifications during automatic mass production raise finished yield and machining precision.

4. Rich product variety: According to market demand and customer's special requirements, customized 316H products are provided to meet the use requirements under various complex working conditions, providing customers with more choices.

5. Perfect after-sales service: The perfect after-sales service system can respond to customer needs and feedback in a timely manner. For problems encountered by customers during use, technical support and solutions are provided to customers quickly.

We mainly engage in cold heading wire, bar, peeled bar, and profiled bar; our products cover 11 series and more than 300 grades, and we continue to develop a variety of professional steels. We can provide all-round solutions such as cold heading finishing line manufacturing and high-precision bright bar customization, and provide one-stop procurement services and package procurement solutions for global customers. The website displays some grades. If you don’t have the grade you need, please contact us by phone or email.