Product Image 20 - BBN STEEL STORES

• Introduction
• Chemical
• Mechanical
• Physical
• Messages

CSA 300W G40.20/G40.21 Introduction

Our company has steel products billets, steel products, hot-rolled sheets, cold-drawn sheets, seamless steel pipes, steel bars and other products. CSA 300W G40.20/G40.21 has a good reputation in the market, high-quality products, and thoughtful service in the steel industry. CSA 300W G40.20/G40.21 has complete specifications, and the products are widely used in aerospace, petrochemical, and construction projects, with low requirements for products, easy processing and low dimensional accuracy requirements. And provide cutting, bending, welding, drilling, and other processing services.

Application: General requirements for rolled or welded structural quality steel / Structural quality steel.

Heat treated: 1399°C - 1558°C.

CSA 300W G40.20/G40.21 Mechanical properties

YieldRp0.2 (MPa)	TensileRm (MPa)	ImpactKV/Ku (J)	ElongationA (%)	Reduction in cross section on fractureZ (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
535 (≥)	241 (≥)	14	41	44	Solution and Aging, Annealing, Ausaging, Q+T,etc	212

CSA 300W G40.20/G40.21 Physical properties

Physical properties of CSA 300W G40.20/G40.21 are mainly indicated by modulus of electrical resistance value, thermal conductivity, specific thermal capacity, coefficient of thermal expansion, elasticity, poisson's ratio, density, etc.

Temperature(°C)	Modulus of elasticity(GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity(W/m·°C)	Specific thermal capacity(J/kg·°C)	Specific electrical resistivity(Ω mm²/m)	Density(kg/dm³)	Poisson's coefficient, ν
24	-	-	0.34	-
346	375	-	31.3	421	-
294	-	31	33.2	322	334

CSA 300W G40.20/G40.21 Processing Service

Rolling Machine

Cutting Machine

Multi-Drilling Machine

Deep-Hole Drilling Machine

Portal-type Processing Center

Floor-type Milling-boring Machine

G40.20/G40.21 Other grades or similar grades

Grade	Standard	Area	Content
100QT	G40.20/G40.21	Canada	General requirements for rolled or welded structural quality steel / Structural quality steel
260G	G40.20/G40.21	Canada	General requirements for rolled or welded structural quality steel / Structural quality steel
70A	G40.20/G40.21	Canada	General requirements for rolled or welded structural quality steel / Structural quality steel
300WT	G40.20/G40.21	Canada	General requirements for rolled or welded structural quality steel / Structural quality steel
400WT	G40.20/G40.21	Canada	General requirements for rolled or welded structural quality steel / Structural quality steel
480A	G40.20/G40.21	Canada	General requirements for rolled or welded structural quality steel / Structural quality steel

G40.20/G40.21 300W Recent list

• G40.20/G40.21 260WT
• G40.20/G40.21 260G
• G40.20/G40.21 230G

CSA 300W G40.20/G40.21 messages

Submit