Super Alloy Sanicro 30

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication and Heat Treatment
     Machinability
     Forming
     Welding
     Forging
     Hot Working
     Cold Working
     Hardening
Other Designations
Applications

Introduction

Sanicro 30 is an austenitic stainless steel material that has excellent high temperature properties. The alloy resists oxidation, stress corrosion cracking and intergranular corrosion at high temperatures.

The following section will provide an overview of Sanicro 30 alloy.

Chemical Composition

The chemical composition of Sanicro 30 alloy is outlined in the following table.

Element Content (%)
Iron, Fe 45.8
Nickel, Ni 32
Chromium, Cr 20
Manganese, Mn 0.6
Silicon, Si 0.5
Titanium, Ti 0.5
Aluminum, Al 0.3
Cobalt, Co ≤0.1
Copper, Cu ≤0.1
Carbon, C ≤0.03
Phosphorous, P ≤0.02
Sulfur, S ≤0.015

Physical Properties

The following table shows the physical properties of Sanicro 30 alloy.

Properties Metric Imperial
Density 8 g/cm3 0.289 lb/in3

Mechanical Properties

The mechanical properties of Sanciro 30 alloy are displayed in the following table.

Properties Metric Imperial
Tensile strength 520-690 MPa 75400-100000 psi
Yield strength ≥235 MPa ≥34100 psi
Elongation at break ≥30% ≥30%
Vickers hardness 150 150

Thermal Properties

The thermal properties of Sanicro 30 alloy are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@20-100°C/68-212°F) 16 µm/m°C 8.89 µin/in°F
Thermal conductivity (@20°C/68°F) 12 W/mK 83.3 BTU.in/hrft².°F

Fabrication and Heat Treatment

Machinability

Conventional machining techniques that are used for machining iron-based alloys can be used.

Forming

Sanicro 30 alloy has excellent ductility, and can be readily formed by all conventional techniques.

Welding

The alloy can be welded using commonly used welding techniques such as gas-tungsten arc welding, shielded metal-arc welding, gas metal-arc welding and submerged-arc welding.

Forging

Sanicro 30 alloy can be forged in the temperature ranging from (1850 to 2250°F).

Hot Working

The alloy can be hot worked in the temperature ranging from (1600 to 2200°F).

Cold Working

Cold working may be performed using standard tooling.

Hardening

The alloy can be hardened by cold working only.

Other Designations

Other designations that are equivalent to Sanicro 30 alloy include the following:

AMS 5766 ASTM B409
AMS 5871 ASTM B514
ASTM B163 ASTM B515
ASTM B366 ASTM B564
ASTM B407 DIN 1.4876
ASTM B408



Applications

The following are the list of applications of Sanicro 30 alloy:

  • Heat treating equipment and fixtures
  • Sheathing for tubular heating elements
  • Heat exchangers

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