Sanmac®329

Sanmac®329

Sanmac®329

Product catalog summary
Introduction
Sanmac® is a product of collaboration between Sandvik Materials Technology and Sandvik Coromant, aimed at enhancing the machinability of stainless steel grades and developing suitable tooling concepts. This collaboration results in improved production economy for customers.

Higher Productivity
The Sanmac family of stainless steels has been further developed to increase productivity in the machining industry. Improvements include reduced tool wear and increased cutting speeds, leading to significant cost reductions per produced article. The Sanmac program is continuously expanding with new steel grades and dimensions.

Collaboration Benefits
Working with Sandvik Materials Technology and Sandvik Coromant enhances service and delivery precision, helping businesses grow by shortening lead times and reducing inventory.

Primary Products
  • Sandvik Stainless Bar
  • Sanmac® 329: A machinability-improved duplex steel for cost-efficient component manufacturing, especially suitable for the pulp and paper industry.

Sanmac 329 Features
Sanmac 329 is optimized for controlled chip breaking and efficient machining, allowing increased cutting speed, longer tool life, and minimal operator engagement. It is particularly suited for alkaline environments like the pulp and paper industry but less suitable for seawater and acidic environments.

Comparison: Sanmac 329 vs Sanmac 2205
PropertySanmac 329Sanmac 2205
Proof strength450 MPa450 MPa
Tensile strength620–880 MPa650–880 MPa
PRE*≥32≥35
Impact strength, 20°C≥85 J≥100 J
Modulus of elasticity200 GPa200 GPa
Machinability (comparison)130100

*PRE = Pitting Resistance Equivalent

Chemical Composition (Nominal) %
ElementSanmac 329Sanmac 2205
C≤0.05≤0.030
Si≤1.0≤1.0
Mn≤2.0≤2.0
P≤0.035≤0.030
S≤0.030≤0.015
Cr26.522.5
Ni4.55.5
Mo1.53.2
N0.080.18


Standards
Sanmac 329 complies with EN number 1.4460 and product standard EN 10088-3.

Cutting Performance
Sanmac 329 offers improved machinability due to optimized inclusion morphology and sulphur addition, providing benefits such as increased cutting speed and longer tool life.

Recommended Inserts and Cutting Data
  • Parting-off: Insert Grade CM, Feed 0.08–0.12 mm/rev, Cutting speed 100 m/min
  • Grooving: Insert Grade GF, Feed 0.08–0.12 mm/rev, Cutting speed 140 m/min
  • Turning: Insert Grade MF, Feed 0.15 mm/rev, Cutting speed 210 m/min; MM, Feed 0.30 mm/rev, Cutting speed 170 m/min
  • Thread Turning: Insert Grade F, Cutting speed 120 m/min
  • Thread Tapping: Cutting speed 4–12 m/min
  • Drilling: High-speed steel drilling with HSS drill, Feed 0.03–0.09 mm/rev, Cutting speed 8–15 m/min; Solid carbide drilling with CoroDrill 840, Feed 0.06–0.22 mm/rev, Cutting speed 50 m/min
  • Short Hole Drilling: CoroDrill 880, Feed 0.04–0.18 mm/rev, Cutting speed 140 m/min
See more

Catalog excerpts

Sanmac®329-1

PRIMARY PRODUC Sandvik stainless Sanmac improves your production economy Sanmac® is the result of extensive efforts to improve the machinability of stainless steel grades and the design of tooling concepts suitable for stainless steel machining. The result of this cooperation between Sandvik Materials Technology and Sandvik Coromant is improved production economy for you as our customer. Higher productivity The family of Sanmac stainless steels has now been further improved through extensive product development to increase productivity for customers in the machining industry. With Sanmac we have been able to reduce tool wear, and increase cutting speeds, giving productivity improvements and therefore significant cost reductions per produced article. The Sanmac program is continuously being extended with new steel grades and dimensions. Clever together By working together with Sandvik Materials Technology and Sandvik Coromant, improved service and delivery precision to your customers can help you grow your business. Our stocks and distribution network, together with the improved productivity of Sanmac 329, can help you to shorten lead times to your customers and to reduce your inventory. Alloy 329 was one of the earliest duplex stainless steels, developed for a wide variety of uses in construction industries. Now Sandvik has taken the alloy a significant step forward by improving its machining properties. This is achieved through the addition of sulphur and by optimized inclusion morphology. As every member of the Sanmac family, Sanmac 329 is optimized for controlled chip breaking as well as secure and efficient machining, allowing for increased cutting speed, longer tool life and minimal operator engagement. A perfect choice for pulp and paper Sanmac 329 is especially suited for the manufacture of components for pumps and other equipment used in e.g. the pulp and paper industry. It is delivered together with cutting data developed in cooperation with Sandvik Coromant. Sandvik is an integrated manufacturer, meaning we control the entire production process from melt to finished product. This means consistent material quality from batch to batch. Machine settings can thereby be repeated between runs, which further increases productivity. In alkaline environments, such as the pulp and paper industry, Sanmac 329 is a cost-effective choice. Compared to Sanmac 2205 it is less suitable for seawater applications and other acidic environments. Sanmac 329 highlights • Machinability-improved duplex stainless steel • Controlled chip breaking • Increased cutting speed • Longer tool life • Excellent choice for pulp and paper applications • Consistent quality Sanmac 329 vs Sanmac 2205 Sanmac 329 Sanmac 2205 Proof strength_450 MPa_450 MPa Tensile strength620-880 MPa 650-880 MPa PRE*>32>35 Impact strength, 20°C>85 J>100 J Modulus of elasticity200 GPa200 GPa Machinability (comparison) 130100 *PRE = Pitting Resistance Equivalent

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Sanmac®329-2

Chemical composition (nominal) % C Si Mn P S Cr Ni Mo N Standards Sanmac 329 _EN number 1.4460 Product standard EN 10088-3 RECOMMENDED INSERTS AND CUTTING DATA STARTING VALUES Turning Insert Grade Feed Cutting speed geometry (mm/rev) (m/min) Thread turning Insert Grade Cutting speed geometry (m/min) Thread tapping Cutting speed (m/min) 4-12 Cutting speeds in the upper range should be chosen for coated threading taps Parting-off Insert Grade Feed Cutting speed geometry (mm/rev) (m/min) m Standard 329 m Sanmac 329 By applying the collective...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.