Q355NL H-Beam | Low-Temperature Medium Strength H Beam, A572 Gr.50(Low Temp) S355NL SM490YA Equivalent

Excellent low-temperature toughness, qualified at -40℃ impact test
Stable medium yield strength for heavy structural loads
Good weldability for site fabrication in cold regions
Resists brittle fracture under frigid environmental conditions
Complete size range, custom cutting & processing service

Product Overview

Q355NL H-Beam belongs to low-temperature medium strength structural steel grade. It is equivalent to ASTM A572 Gr.50 (Low Temp), EN S355NL and JIS SM490YA. This H shape beam features optimized cross-sectional design for uniform stress distribution. It can reliably maintain impact toughness at -40°C, preventing brittle fracture under cold ambient conditions. Widely used for outdoor steel structures in cold climate zones and winter construction projects. Our Q355NL H-beam is strictly manufactured under GB/T 11263 standard, supplied with mill test certificates. Custom services including length cutting, blasting and coating are available to meet overseas cold-region engineering specifications.

H-Beam

Chemical & Mechanical Property Snapshot

Item	Value
Grade	Q355NL
Yield Strength ≥	355 MPa
Tensile Strength	470 – 630 MPa
Elongation ≥	21%
Impact Test	-40℃ Charpy V-notch impact
C (Carbon)	≤0.20%
Mn (Manganese)	≤1.60%
Si (Silicon)	≤0.50%
P (Phosphorus)	≤0.030%
S (Sulfur)	≤0.030%

Detailed Technical Specifications

Specification	Details
Product Name	Q355NL Low-Temperature Medium Strength H-Beam
Standard	GB/T 11263
Equivalent Grade	A572 Gr.50(Low Temp), S355NL, SM490YA
Size Range	Height:100–900mm; Flange width:100–400mm
Surface	Black / Shot blasting / Anti-rust paint coating
Processing	Cut to fixed length, drilling, edge treatment
MOQ	5Ton
Lead Time	7–15 working days
Certification	ISO, Mill Test Certificate (MTC)

Dimension Table

Designation	Height (H) mm	Flange Width (B) mm	Web Thickness (tw) mm	Flange Thickness (tf) mm	Weight kg/m	Section Area cm²
Chinese Standard HW Wide-Flange H-Beam
HW100×100	100	100	6	8	17.2	21.9
HW125×125	125	125	6.5	9	23.8	30.3
HW150×150	150	150	7	10	31.9	40.6
HW200×200	200	200	8	12	50.5	64.3
HW250×250	250	250	9	14	72.4	92.2
HW300×300	300	300	10	15	94.0	119.7
HW400×400	400	400	13	21	172.6	219.8
HW500×500	500	500	15	23	239.0	304.5
HW600×600	600	600	17	26	319.0	406.4
Chinese Standard HM Medium-Flange H-Beam
HM150×100	150	100	6	9	20.4	26.0
HM200×150	200	150	6.5	9	31.2	39.8
HM250×175	250	175	7	11	44.1	56.0
HM300×200	300	200	8	12	57.3	73.0
HM350×250	350	250	9	14	79.7	101.3
HM400×300	400	300	10	16	104.0	132.6
HM450×300	450	300	11	18	121.0	154.4
HM500×300	500	300	12	20	138.0	176.0
Chinese Standard HN Narrow-Flange H-Beam
HN100×50	100	50	4.5	7	9.54	12.2
HN150×75	150	75	5	7	14.3	18.3
HN200×100	200	100	5.5	8	20.9	26.7
HN250×125	250	125	6	9	29.0	36.9
HN300×150	300	150	6.5	9	37.3	47.5
HN350×175	350	175	7	11	50.0	63.7
HN400×200	400	200	8	13	66.0	84.1
HN450×200	450	200	9	14	76.5	97.4
HN500×200	500	200	10	16	89.6	114.2
HN600×200	600	200	11	17	106.0	135.2
HN700×300	700	300	13	24	185.0	235.5
HN800×300	800	300	14	26	210.0	267.4
HN900×300	900	300	16	28	243.0	309.1
HN1000×300	1000	300	18	30	277.0	352.2
European Standard HEB Wide-Flange Heavy H-Beam
HEB100	100	100	6	10	20.4	26.0
HEB120	120	120	6.5	11	26.7	34.0
HEB140	140	140	7	12	33.7	43.0
HEB160	160	160	8	13	42.6	54.3
HEB180	180	180	8.5	14	51.6	65.7
HEB200	200	200	9	15	61.3	78.1
HEB220	220	220	9.5	16	71.5	91.2
HEB240	240	240	10	17	83.1	106.0
HEB260	260	260	10.5	17.5	93.0	118.4
HEB280	280	280	11	18	103.0	131.4
European Standard HEA Wide-Flange Light H-Beam
HEA100	100	96	5	8	16.7	21.3
HEA120	120	114	5	8	20.4	26.0
HEA140	140	133	5.5	8.5	24.7	31.5
HEA160	160	152	6	9	29.9	38.1
HEA180	180	171	6	9.5	35.5	45.2
HEA200	200	190	6.5	10	42.3	53.9
European Standard IPE Narrow-Flange I-Beam
IPE80	80	46	3.8	5.2	6.0	7.6
IPE100	100	55	4.1	5.7	8.1	10.3
IPE120	120	64	4.4	6.3	10.4	13.2
IPE140	140	73	4.7	6.9	12.9	16.4
IPE160	160	82	5	7.4	15.8	20.1
IPE180	180	91	5.3	8	18.8	23.9
IPE200	200	100	5.6	8.5	22.4	28.5
IPE220	220	110	5.9	9.2	26.2	33.4
IPE240	240	120	6.2	9.8	30.7	39.1
IPE270	270	135	6.6	10.2	36.1	45.9
IPE300	300	150	7.1	10.7	42.2	53.7
Japanese Standard H-Beam
H100×50	100	50	4.5	7	9.5	12.2
H150×75	150	75	5	7	14.3	18.3
H200×100	200	100	5.5	8	20.9	26.7
H300×150	300	150	6.5	9	37.3	47.5
H400×200	400	200	8	13	66.0	84.1
H500×250	500	250	9	14	89.0	113.4
H600×300	600	300	12	17	118.0	150.1
H700×300	700	300	13	24	185.0	235.5

Product Comparison Table

Grade Group	Chinese GB Grade	American ASTM Grade	European EN Grade	Japanese JIS Grade	Core Performance Feature	Typical Application Scenario
Low-Temperature Medium Strength	Q355NL	A572 Gr.50 (Low Temp)	S355NL	SM490YA	Pass -40°C low temp impact test, suitable for cold regions	Outdoor structures in cold climate areas, winter construction projects

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FAQs

What grades is Q355NL H-Beam equivalent to?

Q355NL H-Beam is equivalent to ASTM A572 Gr.50 (Low Temp), EN S355NL and JIS SM490YA low-temperature structural steel.

What is the key advantage of Q355NL vs Q355B H beam?

Q355NL can pass -40℃ low temperature impact test, while Q355B only does room temperature impact test. Q355NL is designed for cold environment projects.

What are the typical applications of Q355NL H-Beam?

It is used for outdoor steel structures in cold climate areas, winter construction projects, cold area factory frames and low-temperature supporting structures.

Can you provide custom cutting for Q355NL H beam?

Yes, we offer cut-to-length service, and can also provide surface blasting and anti-corrosion coating.

Will MTC be provided with shipment?

Yes, mill test certificate is supplied for every batch for quality verification.

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Q355NL H-Beam | Low-Temperature Medium Strength H Beam, A572 Gr.50(Low Temp) S355NL SM490YA Equivalent