ASTM A516 Grade 70 Data Sheet

Mar 25, 2026
Tags: A516GR70

Table of data for chemical composition, carbon equivalent, mechanical properties, impact toughness, physical properties, and tolerances of ASTM A516 Grade 70 Steel Plates.

1. Chemical Composition Table

Element	Composition, %
Element	≤12.5 mm	12.5 – 50 mm	50 - 100 mm	100 - 200 mm	≥ 200 mm
C, max	0.27	0.28	0.30	≤0.31	≤0.31
Mn	0.85 – 1.20	0.85 – 1.20	0.85 – 1.20	0.85 – 1.20	0.85 – 1.20
Si	0.15 – 0.40	0.15 – 0.40	0.15 – 0.40	0.15 – 0.40	0.15 – 0.40
P, max	0.025	0.025	0.025	0.025	0.025
S, max	0.025	0.025	0.025	0.025	0.025

2. Carbon Equivalent (CE) Table

Thickness, mm	≤12.5	12.5 – 50	50 - 100	100 - 200	≥ 200
CE, max	0.43%	0.43%	0.45%	0.45%	0.45%

Note: using the IIW carbon equivalent formula: CE = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15

3. Mechanical Properties Table

Thickness, mm	≤12.5	12.5 – 50	50 - 100	100 - 200	≥ 200
Yield Strength, min, MPa	260	260	260	260	260
Tensile Strength, MPa	485 - 620	485 - 620	485 - 620	485 - 620	485 - 620
Elongation, min, %	21	21	20	18	17

4. Impact Toughness Table (Charpy V-notch Impact Test)

Specimen Size, mm	Test temperature	Impact Energy, min
10×10	-29 ℃	27
10×10	-45 ℃	20

5. Physical Properties Table (Typical value)

Property	Value	Unit
Density	7.85	g/cm³
Brinell Hardness	140 – 187	HB
Elastic Modulus	200	GPa
Thermal Conductivity (100°C)	52.6	W/m·K
Specific Heat Capacity	470	J/kg·K
Linear Expansion Coefficient (20–100°C)	12.5×10⁻⁶	/°C
Electrical Resistivity	1.59×10⁻⁷	Ω·m

6. Dimensions and Tolerances Table

6.1 Thickness Tolerance

Thickness, mm	Width, mm
Thickness, mm	≤ 2000	2000 – 2500	2500 – 3000	3000 – 4000
3.0 – 5.0	±0.5	±0.6	±0.8	—
5.1 – 8.0	±0.6	±0.7	±0.9	—
8.1 – 15.0	±0.7	±0.8	±1.0	±1.1
15.1 – 25.0	±0.9	±1.0	±1.1	±1.3
25.1 – 40.0	±1.0	±1.1	±1.3	±1.5
40.1 – 65.0	±1.2	±1.3	±1.5	±1.8
65.1 – 90.0	±1.5	±1.7	±1.9	±2.1
90.1 – 150.0	±2.0	±2.1	±2.3	±2.6
150.1 – 200.0	±2.5	±2.7	±3.0	±3.5

6.2 Width Tolerance

Type	Tolerance
Sheared Edge	+4 mm / -0 mm
Gas-cut Edge	+5 mm / -0 mm

6.3 Length Tolerance

Length	Tolerance
≤ 10 m	+10 mm / -0 mm
> 10 m	+15 mm / -0 mm

6.4 Flatness Tolerance

Thickness, mm	Unevenness, mm/m
≤ 10	7
10 – 25	7
25 – 40	6
＞ 40	＞ 5

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