Structural & HSLA Steel
Structural, HSLA, pressure-vessel, weathering and shipbuilding steels — S355, Q345, A516, AH36, API and boiler grades.
09CuPCrNi-A
09CuPCrNi-A is China’s GB/T 4171 weathering steel — the name itself lists the alloy system (Cu-P-Cr-Ni) — and is the dom…
12Cr1MoVG
12Cr1MoVG is the Chinese Cr-Mo-V boiler tube steel of GB/T 5310, a mainstay for superheater and reheater tubes and main …
13CrMo4-5
13CrMo4-5 is the EN 10028-2 1Cr-0.5Mo creep-resisting plate for boilers, hot vessels and power piping. It is the Europea…
15CrMoG
15CrMoG is China’s 1Cr-0.5Mo heat-resistant steel for boiler tube (GB/T 5310) and vessel plate, the domestic counterpart…
16Mo3
16Mo3 is a molybdenum-alloyed pressure-vessel steel to EN 10028-2, specified for boilers and hot vessels up to about 530…
20g
20g is the classic Chinese plain-carbon boiler plate of GB/T 713, long used for low and medium-pressure boiler drums and…
A204 Gr.B
ASTM A204 Grade B is a molybdenum-alloy (0.5Mo) pressure-vessel plate whose Mo addition lifts elevated-temperature stren…
A216 WCB
ASTM A216 WCB is the world’s default cast carbon steel for valve bodies, pump casings and pressure castings — the “B” ca…
A217 WC6
ASTM A217 WC6 is the 1.25Cr-0.5Mo cast steel for high-temperature pressure castings — the cast counterpart of A387 Gr.11…
A217 WC9
ASTM A217 WC9 is the 2.25Cr-1Mo cast steel — cast counterpart of A387 Gr.22 plate and F22 forgings — for the hottest, mo…
A302 Gr.B
ASTM A302 Grade B is a manganese-molybdenum-nickel vessel plate: the Mn-Mo base of A204 with a nickel addition for tough…
A387 Gr.11
ASTM A387 Grade 11 is the 1.25Cr-0.5Mo pressure-vessel plate for elevated-temperature service in refineries and petroche…
A387 Gr.12
ASTM A387 Grade 12 is the 1Cr-0.5Mo vessel plate, one step below Grade 11 in chromium and high-temperature strength. It …
A387 Gr.22
ASTM A387 Grade 22 is the 2.25Cr-1Mo plate behind hydrocracking and hydrotreating reactors — the workhorse alloy for hot…
A387 Gr.5
ASTM A387 Grade 5 is the 5Cr-0.5Mo pressure-vessel plate for the hottest, most corrosive refinery duties, where its chro…
A516 Gr.60
ASTM A516 Grade 60 is a carbon pressure-vessel plate specified for moderate and low-temperature service where notch toug…
A516 Gr.65
ASTM A516 Grade 65 is the middle grade of the A516 pressure-vessel plate family, sitting between Gr.60 and the more comm…
A516 Gr.70
ASTM A516 Grade 70 is the most specified pressure-vessel plate in the world — the default carbon steel for ASME Section …
A537 Cl.1
ASTM A537 Class 1 is a heat-treated carbon-manganese-silicon vessel plate — essentially A516 chemistry given a normalizi…
A572 Gr.50
ASTM A572 Grade 50 is the standard American HSLA structural steel — the 50 ksi yield grade that replaced A36 in most US …
A572 Gr.55
ASTM A572 Grade 55 is a columbium-vanadium HSLA structural steel one step above the ubiquitous Gr.50: yield rises to ≥38…
A572 Gr.60
ASTM A572 Grade 60 is the 60 ksi member of the standard American HSLA structural family. It slots between Gr.50 and Gr.6…
A572 Gr.65
ASTM A572 Grade 65 tops the A572 family at 65 ksi yield. It is the American route to S460-class weight savings in buildi…
A709 Gr.50
ASTM A709 Grade 50 is the bridge version of A572 Gr.50: the same 50 ksi HSLA chemistry, but purchased to the bridge spec…
AH32
AH32 is a higher-strength hull structural steel (315 MPa yield) approved by the classification societies for shipbuildin…
AH36
AH36 is the most used high-tensile hull steel in the world — the 355 MPa grade that modern bulk carriers, tankers and co…
AH40
AH40 is the 390 MPa higher-tensile hull steel of the classification-society system (ASTM A131 / GB/T 712 family). It ste…
API 2H Gr.50
API 2H Grade 50 is the offshore-structure plate specification: a normalized, fine-grain C-Mn steel with 345 MPa yield, −…
ASTM A36
ASTM A36 is the most widely used structural carbon steel in North America, the default material for buildings, bridges a…
ASTM A514
ASTM A514 is the American 100 ksi yield Q&T alloy plate, used where section weight must come down without giving up stre…
ASTM A588
ASTM A588 is the American HSLA weathering steel specification — the 50 ksi structural grade whose Cu-Cr-Ni alloying give…
Corten A
Corten A is the original weathering steel composition (Cu-Cr-Ni-P alloyed), forming a dense, self-protecting rust layer …
Corten B
Corten B is the structural weathering grade, normally supplied to ASTM A588 chemistry: lower phosphorus than Corten A, w…
DH36
DH36 is the −20 °C impact version of the 355 MPa hull grade, specified for vessels trading in cold waters and for expose…
DH40
DH40 pairs the 390 MPa strength of the 40-series hull steels with impact toughness certified at −20 °C. It is specified …
EH32
EH32 is the −40 °C toughness version of the 315 MPa hull grade, used for polar and cold-climate vessels and offshore str…
EH36
EH36 is the premium 355 MPa hull grade with impact toughness guaranteed at −40 °C — standard for LNG/LPG carriers, ice-g…
EH40
EH40 is the arctic member of the 390 MPa hull-steel family: same chemistry window as AH40/DH40, but impact-certified at …
GP240GH
GP240GH (1.0619) is the EN 10213 cast carbon steel for pressure parts — the European counterpart of ASTM A216 WCB, speci…
Grade A (ship)
Grade A is the baseline ordinary-strength hull steel of the classification-society system (IACS UR W11, mirrored by ASTM…
Grade B (ship)
Grade B is the ordinary-strength hull steel with a 0 °C impact guarantee — the default shell and deck plate for vessels …
Grade D (ship)
Grade D extends ordinary-strength hull steel to −20 °C impact service. It is the 235 MPa grade chosen for hulls that tra…
Grade E (ship)
Grade E is the −40 °C member of the ordinary-strength ship steels: 235 MPa yield with Charpy toughness guaranteed at −40…
P265GH
P265GH is the EN 10028-2 workhorse pressure-vessel steel for European boiler and vessel fabrication — the normalized C-M…
P355GH
P355GH is the EN 10028-2 carbon steel for pressure purposes at elevated temperature — the European counterpart of A516 G…
Q235B
Q235B is China’s everyday carbon structural steel — the volume grade for domestic construction, plate, sections and weld…
Q345R
Q345R is China’s standard pressure-vessel plate to GB/T 713 — the R (容， vessel) variant of the Q345 family with tighter …
Q355B
Q355B is the current GB/T 1591 designation that replaced Q345B in the 2018 revision, with the yield class raised from 34…
Q355D
Q355D is the low-temperature quality of China’s Q355 HSLA series to GB/T 1591 — the successor designation to Q345D. It g…
Q390B
Q390B is the 390 MPa step in the GB/T 1591 HSLA ladder, microalloyed with Nb/V/Ti for strength without a carbon increase…
Q420B
Q420B is a 420 MPa yield HSLA steel to GB/T 1591, widely used in Chinese crane, mining and power-transmission constructi…
Q460C
Q460C is the 460 MPa class of GB/T 1591, the standard high-strength grade for landmark Chinese steel structures — it was…
Q690D
Q690D is China’s 690 MPa Q&T structural plate, produced by mills such as Wugang and Baowu for cranes, mining trucks and …
R260
R260 is the world’s standard rail steel grade to EN 13674-1, a pearlitic carbon-manganese steel whose as-rolled head har…
R350HT
R350HT is the heat-treated premium rail grade of EN 13674-1. In-line head hardening refines the pearlitic microstructure…
S235JR
S235JR is the baseline non-alloy structural steel of EN 10025-2, the default grade for ordinary steel construction acros…
S275J0
S275J0 is the 0 °C impact-tested version of S275, specified where the structure sees sub-ambient service temperatures. C…
S275J2
S275J2 is the low-temperature quality of the S275 family to EN 10025-2: same 275 MPa yield as S275JR, but with Charpy to…
S275JR
S275JR is the middle step of the EN 10025-2 structural family, offering about 17% more yield strength than S235JR at a s…
S355J0
S355J0 sits between S355JR and the −20 °C grade S355J2 in the EN 10025-2 family, with a 0 °C impact guarantee. It is wid…
S355K2
S355K2 is the high-toughness quality of S355 to EN 10025-2. Where S355J2 guarantees 27 J at −20 °C, K2 raises the bar to…
S355NL
S355NL is the low-temperature grade of EN 10025-3 normalized fine-grain structural steels. It matches S355N in strength …
S460M
S460M is the −20 °C quality of the TMCP 460 grade to EN 10025-4. Controlled rolling and accelerated cooling deliver 460 …
S460ML
S460ML is a thermomechanically rolled fine-grain steel to EN 10025-4 with a 460 MPa yield and impact toughness guarantee…
S690QL
S690QL is the EN 10025-6 quenched-and-tempered structural steel with 690 MPa minimum yield — the grade behind weight-cri…
S890QL
S890QL is the EN 10025-6 Q&T structural plate with 890 MPa minimum yield — a step beyond S690QL for boom and chassis des…
S960QL
S960QL is the strongest grade in the EN 10025-6 structural family: 960 MPa minimum yield with −40 °C toughness, for the …
SM490A
SM490A is the weldable structural steel of JIS G3106 — rolled steel for welded structures with controlled chemistry (C ≤…
SM520B
SM520B is the 520 MPa tensile class of JIS G3106 weldable structural steel, with yield of at least 365 MPa in thin secti…
SM570
SM570 is the highest-strength grade of JIS G3106 rolled steel for welded structures: tensile 570–720 MPa with yield from…
SPA-H
SPA-H is the JIS G3125 hot-rolled weathering steel — Japan’s Corten A equivalent, mass-produced for containers, vehicles…
SS400
SS400 is Japan’s general structural steel under JIS G3101 and one of the most traded structural grades in Asia. The “400…
SS490
SS490 is the higher-strength grade of JIS G3101, a 490–610 MPa tensile class structural steel with yield of at least 285…
U71Mn
U71Mn is China’s standard carbon rail steel to GB/T 2585, the pearlitic C-Mn grade laid on most conventional-speed lines…
U75V
U75V is China’s vanadium-microalloyed rail steel to GB/T 2585, the workhorse upgrade over U71Mn for busy passenger and f…
See also the Steel equivalent charts.