is it stainless steel

Invento EN31 steel rod is not Stainless Steel. Normal Carbon Steel is an alloy of Iron and Carbon. Stainless Steel should contain at least 10.5% Chromium and less than 1.2% Carbon. EN31 steel contains 1.4% Chromium, 0.5% Manganese, 0.2% Silicon and 1% Carbon. Invento EN31 steel rod is 'hard chrome plated' and used in industrial applications for its hardenability, wear resistance and corrosion resistance. For normal applications EN31 steel rod is rustproof and abrasion resistant.

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INVENTO 2pcs EN31 Rustproof Steel Smooth Rod 8mm OD 400mm (0.4 mtr) Long for CNC Robotics Machines DIY Projects

Product ID: 128018107

Details

Brand
INVENTO
Item Diameter
8 Millimetres
Item Thickness
8 Millimetres
Item dimensions L x W x H
40 x 0.8 x 0.8
Shape
Cylindrical

📏Precise 8mm OD for seamless integration

⚙️400mm length ideal for versatile CNC & robotics

🛡️EN-31 Hard Chromed for rustproof durability

Description

⚙️ Elevate your build with precision rods that never rust—because your projects deserve the best!

VERSATILE LENGTH - At 400mm, these rods are perfectly sized for a wide range of DIY projects, 3D printers, and robotic applications—adaptable to your creative needs.
TRUSTED BY MAKERS - Highly rated by the maker community for straightness and quality—join the ranks of professionals who demand excellence in every project.
DUAL PACK ADVANTAGE - Get two premium rods in one pack, doubling your build potential and saving you time sourcing components separately.
PRECISION PERFECTED - Engineered with an exact 8mm outside diameter for flawless fit and smooth motion in your CNC and robotics builds.
RUSTPROOF RELIABILITY - Crafted from EN-31 hard chromed steel, these rods resist corrosion and wear, ensuring long-lasting performance without compromise.

The INVENTO 2pcs EN31 Rustproof Steel Smooth Rods are precision-engineered 8mm diameter, 400mm long hard chromed steel rods designed for CNC, robotics, and DIY projects. Their rustproof EN-31 material ensures durability and smooth operation, making them a trusted choice among professionals and hobbyists alike.

Specifications

ASIN	B07RR14N72
Best Sellers Rank	#11,302 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #271 in Robotic Kits & Accessories
Brand	INVENTO
Brand Name	INVENTO
Country of Origin	India
Customer Reviews	4.3 out of 5 stars 103 Reviews
Importer Contact Information	INVENTO
Item Diameter	8 Millimetres
Item Dimensions	40 x 0.8 x 0.8 Centimeters
Item Form	Rod
Item Shape	Cylindrical
Item Thickness	8 Millimetres
Item Type Name	INVENTO 2pcs EN31 Rustproof Steel Smooth Rod 8mm OD 400mm (0.4 mtr) Long for CNC Robotics Machines DIY Projects
Item Weight	500 Grams
Item dimensions L x W x H	40 x 0.8 x 0.8 Centimeters
Manufacturer	INVENTO, INVENTO SALES CORPORATION
Manufacturer Contact Information	INVENTO SALES CORPORATION
Model Number	ISC 1483
Number of Items	2
Packer Contact Information	INVENTO
Part Number	ISC 1483
Shape	Cylindrical
Unit Count	2 Count

Reviews

J**R

Finishing and quality

Good finishing and quality

26.04.2026

S**M

Quality

Recently I ordered these 8mmOD 400mm long smooth rods 6 pieces for my CoreXY build and I got all 6 rods in excellent condition, all straight and no rust. Definitely go for them.

19.03.2026

N**J

Good product

Value for money

16.11.2021

S**K

Good

25.03.2026

J**B

Good

11.01.2026

V**J

Don’t buy

It’s waste of money

4.08.2024

V**L

Good

29.10.2025

A**Y

Good

10.04.2024

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