Engineering and welding Q195 Chemical Composition, Q195 Mechanical Properties, Q195 Heat Treatment

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Data Table for: Steel Grades : Structure Steel : Q195

Chemical composition(mass fraction)(wt.%)

0.06～0.12
≤0.30
0.25～0.50
≤0.045
≤0.050
≤0.30
≤0.30

≤0.30

Mechanical Properties

Quantity
Value
Unit

Young's modulus
Tensile strength
Elongation
Fatigue
Yield strength

200000 - 200000
650 - 880
8 - 25
275 - 275
350 - 550

Physical Properties

Quantity
Value
Unit

Thermal expansion
Thermal conductivity
Specific heat
Melting temperature
Density
Resistivity

10 - 10
25 - 25
460 - 460
1450 - 1510
7700 - 7700
0.55 - 0.55

e-6/K
W/m.K
J/kg.K
°C
kg/m³
Ohm.mm²/m

Heat Treatment:

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Can produce Q195 specifications and size

Steel grade
Specification
Processing range(mm)

Q195
Q195
Q195
Q195
Q195
Q195

Φ1 to Φ2000
10 to 1000
0.08 to 800(T)*10 to 1500(W)*Long
Pipe/tube/slugs/donuts/cubes/other shapes
OD: Φ4-410; WT: 1-35 mm
THK:0.1mm Width:1500mm

Description

Engineering and welding

Mechanics performance

The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | ≤ 16:195
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 16 ~ 40:185

Tensile strength σ b/MPa: 315 ~ 430
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | than 16:33
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | > 16 ~ 40:32
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | > 40 to 60:-
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | > 60 ~ 100:-
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | > 100 ~ 150:-
Elongation δ 5 / (%) (no less) than in steel different thickness or diameter/mm | > 150:-
Impact test (1) | temperature / ℃ :-
Impact test (1) | impact absorption power AKV/J:-

Cold bending property

Sample direction: vertical
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | than 60:0
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | > 60 ~ 100:-
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | > 100 ~ 200:-

Performance characteristics and applications

High plasticity and toughness and welding performance, good pressure processing performance, but low strength.
Load small parts, spacers, rivets, the anchor bolt, colter, funnel, roof, low carbon steel wire, plates, welded pipe, bars, split cotters, and stamping parts, components etc.

GB/T 700-1988 standard and GB 700-1979 standard steel grade comparison

GB/T 700-1988 standadr:

Regardless of rank, the chemical composition and mechanical properties (σ s, σ b, the delta and the cold bending) are to be guaranteed

Rolling plate and rod of products, the mechanical properties of the guarantee condition, can according to product characteristics and application requirements, in the standard separately

GB 700-1979 standard

A1 the mechanical properties of the steel guarantee (σ s, σ b, the delta and the cold bending), B1 steel guarantee the chemical composition of the same with Q195

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