Q460ND Structural Steel

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Q460ND STRUCTURAL STEEL

Grade Q460ND – High-strength low-alloy steel | Yield 460MPa | Impact -20°C guaranteed (40J longitudinal) 🔍 Q460ND Grade Lookup →

Product Overview

Q460ND is a Chinese grade low-alloy high-strength structural steel conforming to GB/T 1591-2018 standard. Delivered in normalized or normalized + tempered condition, it features refined grain structure and excellent low-temperature toughness. The quality grade D guarantees impact properties at -20°C (longitudinal min. 40J). With minimum yield strength of 460MPa (≤16mm), it is ideal for engineering structures, building frameworks, and infrastructure projects in cold climates requiring high strength and reliable toughness.

Equivalent grades: Q460ND ↔ Q460D (previous domestic grade), EN 10025-3 S460ND / S460N (Europe), ASTM A572 Grade 65 (USA).

International Grade Comparison

Europe (EN 10025-3)

S460ND

Impact: -20°C (40J)

Yield: 460MPa (≤16mm)

C: ≤0.20%

Si: ≤0.60%

Mn: 1.00-1.70%

P: ≤0.025%

S: ≤0.020%

Nb: ≤0.05%

V: ≤0.12%

Ti: ≤0.05%

Europe (EN 10025-3)

S460N

Impact: -20°C (40J)

Yield: 460MPa

C: ≤0.20%

Si: ≤0.60%

Mn: 1.00-1.70%

P: ≤0.025%

S: ≤0.020%

Nb+V+Ti: ≤0.22%

China (GB/T 1591)

Q460ND

Impact: -20°C (40J)

Yield: 460MPa

C: ≤0.20%

Si: ≤0.60%

Mn: 1.00-1.70%

P: ≤0.030%

S: ≤0.025%

Nb: 0.01-0.05%

V: 0.01-0.20%

Ti: 0.006-0.05%

Delivery: Normalized / N+T, grade D -20°C impact

USA (ASTM A572)

Gr.65

Impact: Not specified (optional)

Yield: 450MPa (min)

C: ≤0.26%

Si: ≤0.40%

Mn: ≤1.45%

P: ≤0.025%

S: ≤0.025%

Nb+V: ≤0.15%

Cu: ≤0.60%

Note: Q460ND guarantees impact toughness at -20°C (40J longitudinal), making it suitable for cold-region structures. S460ND and S460N are European normalized equivalents; ASTM A572 Gr.65 is a comparable strength grade (impact optional).

China Grade Comparison: Q460D vs Q460ND

Q460D

As-rolled / Normalized (optional)

Yield: 460MPa (≤16mm)

Impact -20°C: 40J (longitudinal)

P: ≤0.030%

S: ≤0.025%

Delivery: As-rolled or normalized

Q460ND

Normalized (guaranteed)

Yield: 460MPa (≤16mm)

Impact -20°C: 40J (longitudinal)

P: ≤0.030%

S: ≤0.025%

Delivery: Normalized/N+T, refined grain structure

Key Advantages

High Strength

Min yield 460MPa (≤16mm), tensile 540-720MPa.

Low-Temp Toughness

Guaranteed KV2 40J at -20°C (longitudinal).

Excellent Weldability

Low carbon equivalent & microalloy design.

Applications

Building Structures

High-rise buildings, stadiums, industrial plants, cold-region construction requiring low-temperature reliability.

Engineering Structures

Bridge girders, transmission towers, heavy machinery, offshore modules, infrastructure in low-temperature environments.

Q460ND Chemical Composition (GB/T 1591-2018)

Chemical element composition of Chinese grade Q460ND low alloy high strength structural steel
Q460ND Approximate Grade Lookup Table

Grade Quality C ≤ Si ≤ Mn P ≤ S ≤
Q460N D 0.20 0.60 1.00-1.70 0.030 0.025
Nb V Ti Cr ≤ Ni ≤ Cu ≤ Mo ≤ N ≤ Als ≥
0.01-0.05 0.01-0.20 0.006-0.05 0.3 0.8 0.4 0.1 0.025 0.015

Notes: a. For structural steel and bar stock, P/S upper limit can increase by 0.005%. b. V+Nb+Ti ≤0.22%, Mo+Cr ≤0.30%. c. Ti can be as high as 0.20%. d. All-aluminum (Alt) min 0.020% if substituted; grain-refining elements rule applies.

The steel shall contain at least one grain-refining element (Al, Nb, V, Ti) with content not less than lower limit.

Q460ND Mechanical Properties (GB/T 1591-2018)

Upper yield strength ReH (MPa, min)

≤16mm 16-40mm 40-63mm 63-80mm 80-100mm 100-150mm 150-200mm 200-250mm
460 440 430 410 400 380 370 370

Tensile strength Rm (MPa)

≤100mm 100-200mm 200-250mm
540-720 530-710 510-690

Elongation A% (min)

≤16-40mm 40-63mm 63-80mm 80-200mm 200-250mm
17 17 17 17 16

Impact KV2 (J) min – Quality D

Temperature Longitudinal Transverse
20°C 55 31
0°C 47 27
-20°C 40 20
Note: Normalized condition includes normalized + tempered. If yield not obvious, use Rp0.2.

Size & Specification

Product Thickness (mm) Width (mm) Length (mm)
Plate 3-250 1000-4000 3000-18000
Sheet/Coil 1.5-20 900-2000 Coil or cut length

Custom sizes and cutting available upon request.

Customizable Options

Laser/plasma cutting, edge beveling, shot blasting, priming, normalizing + tempering, third-party inspection, custom marking.

Quality Assurance

Full Testing
Spectral analysis, tensile & impact, ultrasonic
MTC 3.1/3.2
Full traceability & EN10204 docs

Packaging & Logistics

Bundled with steel straps, waterproof wrapping, clear marking. FOB, CIF, CFR from major Chinese ports. Lead time: 25-35 days.

Request a Quote

Direct email: customize@cehesteel.com – reply within 2 hours.

Frequently Asked Questions

What is Q460ND?

Normalized low-alloy high-strength steel per GB/T 1591-2018, min yield 460MPa, grade D guarantees impact 40J at -20°C (longitudinal).

Equivalent to S460ND?

Yes, Q460ND is comparable to EN 10025-3 S460ND and S460N, also ASTM A572 Grade 65. Verify specific impact requirements.

Difference Q460ND vs Q460D?

Same composition & impact; Q460ND mandates normalized delivery for refined grain structure; Q460D may be as-rolled.

Typical applications?

Engineering structures (bridges, towers) and building structures (high-rise, cold-region industrial buildings).