• 321, Breaking Street
    Beijing ,China
  • Opening Time
    Mon - Sat: 09.00 to 18.00

Q345C Steel Properties and Introduction

Description: Steel In Stock&Buy Steel Online!Our Warehouse For Steel Get Prices, Check Stock ... Place Orders . Star Steel Is The China's Largest Supplier Of Hot Rolled and Cold Roll Steel.Stocking Thousands Of Shapes, Sizes, Lengths And Grades Including Steel Plate, Steel Channels, Steel pipe,Steel Angle ...

Standard: ASTM, AISI, GB, JIS, DIN, BS

Production Capacity: 50000 Tons/Month

Q345C Steel Properties and Introduction

Q345C steel is a Chinese GB standard Low Alloy High Strength Structural Steel, material density is 7.85 g/cm3, tensile strength is 470-630 Mpa, and yield strength is 345 MPa (datasheet tested with 16mm diameter steel bars or steel plates). According to GB/T 1591 – 2008, Q345 material has 5 quality grades: Q345A, Q345B, Q345C, Q345D and Q345E. “Q” is the first letter of Chinese Pinyin: “qu fu dian”, which means Yield Point, “345” is short for 345 MPa. For datasheet and specification, please see the tables below.

Q345 steel weldability, cold & hot workability and corrosion resistance are good. Widely used in bridges, ships, boilers, pressure vessels, petroleum storage tanks, lifting transport machinery and other high-load welded structural parts.

Table-1, Chemical Composition of Q345C Steel
Chemical Composition Content (≤%) ≥%
Steel Grade Quality Grade C Si Mn P S Nb V Ti Cr Ni Cu N Mo B Als
Q345 Q345A 0.20 0.50 1.70 0.035 0.035 0.07 0.15 0.20 0.30 0.50 0.30 0.012 0.10
Q345B 0.035 0.035
Q345C 0.030 0.030 0.015
Q345D 0.18 0.030 0.025
Q345E 0.025 0.020

Notes: The P and S contents of profiles and bars can be increased by 0.005%, and the upper limit of Grade A steel can be 0.0045%.

Table-2, Q345 Mechanical Properties

Mechanical Properties: Yield Strength (≥ N/mm2)
Steel Grade Quality Grade Ø ≤16 16 < Ø ≤ 40 40 < Ø ≤ 63 63 < Ø ≤ 80 80 < Ø ≤ 100 100 < Ø ≤ 150 150 < Ø ≤ 200 200 < Ø ≤ 250 250 < Ø ≤ 400
Q345 Q345A ≥345 ≥335 ≥325 ≥315 ≥305 ≥285 ≥275 ≥265
Q345B
Q345C
Q345D ≥265
Q345E

Notes: Ø = Thickness or wire diameter in mm;

1 MPa = 1 N/mm2

Mechanical Properties: Tensile Strength (N/mm2)
Grade Quality Level Ø ≤ 40 40 < Ø ≤ 63 63 < Ø ≤ 80 80 < Ø ≤ 100 100 < Ø ≤ 150 150 < Ø ≤ 250 250 < Ø ≤ 400
Q345 Q345A 470 – 630 470 – 630 470 – 630 470 – 630 450 – 600 450 – 600
Q345B
Q345C
Q345D 450 – 600
Q345E
Ø mm, Elongation (≥%)
Grade Quality Level Ø ≤40 40 < Ø ≤ 63 63 < Ø ≤ 100 100 < Ø ≤ 150 150 < Ø ≤ 250 250 < Ø ≤ 400
Q345 Q345A ≥20 ≥19 ≥19 ≥18 ≥17
Q345B
Q345C ≥21 ≥20 ≥20 ≥19 ≥18
Q345D ≥17
Q345E

Q345 Equivalent

Q345 steel: Q345A, Q345B, Q345C, Q345D, Q345E equivalent to US ASTM, European Germany DIN, British BS, France NF, Japan JIS, and ISO Standard (For Reference)

Q345 Equivalent
China USA Germany Japanese France UK ISO
Standard Grade Standard Grade Standard Grade (steel number) Standard Grade Standard Grade (steel number) Standard Grade (steel number) Standard Grade
GB/T 1591 – 2008 (Year) Q345A ASTM A529/A529M;
ASTM A572/A572M;
ASTM A588/A588M;
ASTM A678/A678M;
ASTM A808/A808M
Grade 50;
Grade 50;
Grade B;
Grade D;
A808M
DIN EN 10025-2;

DIN 17100

S355JR (1.0045),
E355 (1.0060);
St52-3
JIS G3135 SPFC590 NF EN 10025-2 S355JR (1.0045),
E355 (1.0060);
BS EN 10025-2 S355JR (1.0045),
E355 (1.0060);
ISO 630-2 S355C, S355D (S355)
GB/T 1591 – 2008 Q345B Ditto Ditto Ditto Ditto JIS G3135 SPFC 590 Ditto Ditto Ditto Ditto ISO 630-2 S355C, S355D (S355)
GB/T1591 – 2008 Q345C Ditto Ditto DIN EN 10025-2;
DIN 17100
S355J0 (1.0553),
E335 (1.0060);
St52-3
JIS G 3135 SPFC590 NF EN 10025-2 S355JO (1.0553),
E335 (1.0060)
BS EN 10025-2 S355JO (1.0553),
E335 (1.0060)
ISO 630-2 S355D (S355)
GB/T 1591 – 2008 Q345D ASTM A656/A656M;

ASTM A529/A529M

Type 7;

Grade 50

DIN EN 10025-2;
DIN EN 10025: 1993;
DIN 17100
S355J0 (1.0553),
E335 (1.0060);
S355J2G3 (1.0570);
St52-3
JIS G 3135 SPFC590 NF EN 10025-2;
NF EN 10025: 1993
S355J0 (1.0553),
E335 (1.0060);
S355J2G3 (1.0570)
BS EN 10025-2;
BS EN 10025: 1993
S355J0 (1.0553),
E335 (1.0060);
S355J2G3 (1.0570)
ISO 630-2 S355D (S355)
GB/T 1591 – 2008 Q345E ASTM A656/A656M;

ASTM A529/A529M

Type 7;

Grade 50

DIN EN 10025-2;
DIN EN 10025: 1993
S355J2 (1.0553),
S355K2 (1.0596),
E335 (1.0060);
S355J2G4 (1.0577),
S355K2G3 (1.0595),
S355K2G4 (1.0596)
JIS G3135 SPFC 590 NF EN 10025-2;
NF EN 10025: 1993
S355J2 (1.0553),
S355K2 (1.0596),
E335 (1.0060);
S355J2G4 (1.0577),
S355K2G3 (1.0595),
S355K2G4 (1.0596)
BS EN 10025-2;
BS EN 10025: 1993
S355J2 (1.0553),
S355K2 (1.0596),
E335 (1.0060);
S355J2G4 (1.0577),
S355K2G3 (1.0595),
S355K2G4 (1.0596)

Notes: Q345 steel has been replaced byQ355 in the latest version of GB standard “GB/T 1591 – 2018”, the previous version is “GB/T 1591 – 2008”.

Send Your Message

Name*

Phone*

Email*

Your Message*

S275JO Structural Steel Steel Plate Murray Steel ProductsS275JO steel plate and structural steel is available in a wide range of sizes from Murray Steel Products,along with associated processing services,including profiling,cutting and drilling.S275 Standards Hot Rolled Structural Steel Harris S275 ...

Carbon Steel |Sheet Steel |Rolledsteel « Rolled As a registered ISO 9001:2015 company,Rolled Steel Products state of the art equipment meets virtually any requirement in panel flat quality leveling,precision slitting,close tolerance sheet blanking,strip quality edge conditioning,precision shear ...

China Factory Ms Erw Welded Hot Rolled Black CarbonChina factory MS hot rolled black carbon square hollow section steel pipe tube .Size.Side (mm) 15*15-400-600 .Wall Thickness (mm) 1.0-16.0.Standard.ASTM A500,EN10219,JIS G3466,AS/NZS 1163,etc.Section shape.Rectangular or Square.Type.ERW Pipe.User ra ...

201 hot rolled steel plate,201 hot rolled steel plate China Cold and Hot Rolled Stainless Steel Plate 201 304 Stainless Steel Sheet,Steel Sheet,Stainless Steel Plate 316L manufacturer / supplier in China,offering Cold and Hot Rolled Stainless Steel Plate 201 304 321 316L 310S 410 420 430 904L,1.2mm ...

Mechanical PropertiesGrade Yield Point,min Yield Point,min Tensile Strenth,min Tensile Strenth,min kis [MPa] ksi [MPa] in 8 in [200 mm] 42 [290] 42 [290] 60 [415] 50 [345] 50 [345] 65 [450] 55 [380] 55 [380] 70 [485] 2 more rows Jan 29 2021ASTM A572 Grade 50,55,60,65 Steel Plates Specification Was t ...

China Q235 Hot Rolled Ms Checkered Steel Plate Diamond Steel Plate,Checkered Plate,Chequered Plate manufacturer / supplier in China,offering Q235 Hot Rolled Ms Checkered Steel Plate Diamond Checker Plate,Cold Rolled Color Coated Steel Coil PPGI for Building Material,Ral Color Coating Gi Roofing Shee ...

SB 42 JIS : Total MateriaSB 42 JIS : Total Materia.Finding materials and property data at the click of a button.By registering for the Total Materia FREE Trial it is possible to search and view the property data for over 450,000 alloys as well as find and compare equivalent materials from over 69 co ...

H Beam Price,2021 H Beam Price Manufacturers Suppliers Steel Profile H Beam I Beam with Stock PriceHot Rolled Q235B Q345b Steel H Beam Price for Building Finishing MaterialsStructural Carbon Profile Q235 Hot Rolled Steel H Beam with Stock PriceSs400 Galvanized Section Steel Hot Dipped Galvanize I S ...

Send Your Message

Name*

Phone*

Email*

Your Message*