310S Stainless Steel Bar

Product Overview

310S stainless steel bar is a heat-resistant austenitic alloy with excellent high-temperature strength and oxidation resistance. 🔥 It contains high levels of chromium and nickel, making it ideal for applications exposed to elevated temperatures up to 1150°C. This grade is commonly used in furnace components, heat exchangers, and thermal processing equipment.

Available Sizes

• 📏 Type: Round bar, Square bar, Flat bar
• 📐 Diameter (Round): 6mm – 250mm
• 📏 Length: 1000mm – 6000mm (customizable)
• 🎯 Tolerances: h9, h10, h11 (as required)
• 📚 Standards: ASTM A276, ASTM A479, EN 10095, JIS G4303

Chemical Composition

Element	Content (%)
C	≤ 0.08
Si	≤ 1.50
Mn	≤ 2.00
P	≤ 0.045
S	≤ 0.030
Cr	24.0 – 26.0
Ni	19.0 – 22.0

Mechanical Properties

Property	Value (Annealed)
Tensile Strength	≥ 520 MPa
Yield Strength	≥ 205 MPa
Elongation (%)	≥ 40%
Hardness (HB)	≤ 217

Features & Advantages

• 🔥 Outstanding high-temperature oxidation resistance
• ✅ Suitable for continuous service at up to 1150°C
• 🔧 Excellent weldability and mechanical strength
• 🛡️ Resistant to scaling and thermal fatigue
• ⚙️ Good structural stability under heat stress

Applications

7. Surface Finish

• 🖤 Black
• 🧼 Pickled
• ✨ Bright
• 🔧 Polished (180#, 240#, 320#)
• 🌀 Turned / Ground / Peeled

8. Processing Services

• ✂️ Length cutting and chamfering
• 🧽 Surface grinding and polishing
• 🔩 Heat-resistant machining
• 📏 Precision tolerance control
• 📦 Custom packaging for export