410/416/420/430 Stainless Steel Bar

Product Overview

410, 416, 420, and 430 stainless steel bars are part of the martensitic and ferritic stainless steel family, known for their high strength, excellent hardness, and good wear resistance. 🔨 410 and 420 are martensitic steels that can be heat-treated to high hardness, making them suitable for tools and cutting equipment. 416 is a free-cutting version of 410, while 430 is a ferritic grade with good corrosion resistance but limited hardenability. These steels are commonly used in manufacturing parts requiring high strength, wear resistance, and precision machining.

Available Sizes

• 📏 Type: Round bar, Square bar, Flat bar, Hexagonal bar
• 📐 Diameter (Round): 6mm – 250mm
• 📏 Length: 1000mm – 6000mm or customized
• 🎯 Tolerances: h9, h10, h11 (available upon request)
• 📚 Standards: ASTM A276, ASTM A479, EN 10088-3, JIS G4303

Chemical Composition

Element	410 (%)	416 (%)	420 (%)	430 (%)
C	≤ 0.15	≤ 0.15	≤ 0.15	≤ 0.12
Si	≤ 1.00	≤ 1.00	≤ 1.00	≤ 1.00
Mn	≤ 1.00	≤ 1.00	≤ 1.00	≤ 1.00
P	≤ 0.040	≤ 0.040	≤ 0.040	≤ 0.040
S	≤ 0.030	≤ 0.030	≤ 0.030	≤ 0.030
Cr	11.5 – 13.5	12.0 – 14.0	12.0 – 14.0	16.0 – 18.0
Ni	≤ 0.75	≤ 0.75	≤ 0.75	≤ 0.25

Mechanical Properties

Property	410	416	420	430
Tensile Strength (MPa)	≥ 550	≥ 520	≥ 620	≥ 450
Yield Strength (MPa)	≥ 250	≥ 230	≥ 275	≥ 220
Elongation (%)	≥ 20%	≥ 18%	≥ 18%	≥ 25%
Hardness (HB)	≤ 300	≤ 300	≤ 400	≤ 220

Features & Advantages

• ✅ High strength and excellent hardness for heavy-duty applications
• ⚙️ Ideal for tooling, knives, and wear-resistant components
• 🔥 Heat treatable to achieve high hardness
• 🛠️ Good machinability (especially 416 Free-Cutting Grade)
• 🌟 430 offers better corrosion resistance than other martensitic grades

Applications

Surface Finish

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

Processing Services

• ✂️ Length cutting and chamfering
• 🧽 Surface grinding and polishing
• 🔩 CNC machining and threading
• 📏 Precision tolerance control
• 📦 Custom packaging for bulk shipments